PHYSICAL CHEMISTRY

 

UDK 547.3+615.3

D. N. Dalimov, Kh. S. Toshov, A. Kh. Khaitbaev

SYNTHESIS, COMPOSITION AND SOME PHYSICAL AND CHEMICAL PROPERTIES OF SUPRAMOLECULAR COMPLEXES OF GLYCYRRHIZIC ACID

National University of Uzbekistan, Tashkent, Uzbekistan, e-mail: polyphenol-10@yandex.ru [1]

Abstract. Background. Many poorly soluble or even water-insoluble drug substances (aspirin, indomethacin, gossypol, ragosin, etc.) dissolve well in water in the presence of even a small amount of glycyrrhizic acid (GA).

Purpose. The aim of the study is to modify the previously synthesized drug megosin with the monoammonium salt of glycyrrhizic acid (MASGC) and to investigate physical-chemical properties of the obtained supramolecular complexes.

Methodology. For investigation of the individuality and structure of the synthesized supramolecular complexes of megosin with MASGC, such methods as UV, IR and PMR spectroscopy were applied as well as the study of fine structure of supramolecular complexes was performed on an electron microscope REM-200.

Originality. For the first time the composition and fine structure of the obtained supramolecular complexes of megosin with MASGC (in ratios 1: 1, 1: 2 and 1: 4) were investigated by electron microscopic method.

Findings. On the basis of the obtained theoretical and experimental investigations, the conditions for the preparation of the supramolecular complex of the monoammonium salt of glycyrrhizic acid (MASGC) for the drug Megosin were determined and thus it was found out that water solubility of the drug had been increased by an order. A TLC method has been elaborated for a new medicinal substance and the optimal system of organic solvents has been chosen for the separation of it’s constituents.

Key words: glycyrrhizic acid,” host – guest”, supramolecular complex, bioavailability of drugs, polydentate ligand, pharmacon, low-dose drug substances, spectroscopy.

Highlights:

* supramolecular complexes of the drug “Megosin” with MASGC (ratio 1:1, 1:2; 1:4);

* the composition and fine structure of the obtained complexes were investigated.

References

1. Ipatova O.M. Fosfogliv: mehanizm deystviya i primenenie v klinike. Moskva: Izdatel`stvo 2005-s

2. Sidhu G.S., Oakenfull D.G. A mechanism for the hypocholesterolaemic activity of saponins // British Journal of Nutrition. 1986. Vol. 5. Is. 03. P. 643-649.

3. Dalimov D.N, Isaev YU.T., Sayitkulov A.M. Molekulyarnyie kompleksyi monoammonievoy soli glicirrizinovoy kislotyi s nekotoryimi lekarstvennyimi sredstvami i ih interferoninduciruyus`haya aktivnost` // Xim.prirod.soedin. -Tashkent, 2001. – Nr.2. - C.132-133.

4. Tolstikov G.A., Murinov YU.I., Baltina L.A. Kompleksyi (3-glicirrizinovoy kislotyi s lekarstvennyimi ves`hestvami kak novyie transportnyie formyi. // Him.-farm. zhurn,- 1990.- Nr.8.- S.26-27.

5. Stonik V.A., Tolstikov G.A. Prirodnyie soedineniya i sozdanie otechestvennyih lekarstvennyih preparatov // Vestnik Rossiyskoy akademii nauk. 2008. T. 78. Nr. 8. C. 675-682.

6. Tolstikova T.G., Sorokina I.V., Bryizgalov A.O., Lifshic G.I., Hvostov M.V. Ispol`zovanie podhoda kompleksoobrazovaniya s glicirrizinovoy kislotoy dlya sozdaniya novyih kardiotropnyih sredstv // Biomedicina. 2006. Nr. 4. C. 115-117.

7. Baltina L.A. Chemical Modification of Glycyrrhizic Acid as a Route to New Bioactive Compounds for Medicine. // Current Med. Chem., 2003, - V.10, Nr.2, - R.155-171.

8. Baltina L.A., Kondratenko R.M., Mihaylova L.R., Nasyirov H.M., Pokrovskiy A.G., Plyasunova O.A., Tolstikov G.A., Nepogod`ev S., Fild R.. Poisk novyih biologicheski aktivnyih ves`hestv dlya medicinyi sredi proizvodnyih i modificirovannyih analogov glicirrizinovoy kislotyi. // IV Vserossiyskiy nauchnyiy seminar "Himiya i medicina". Tezisyi dokl. -Ufa: Gilem, 2003. - C.51-52.

9. Tolstikova T.G., Tolstikov A.G., Tolstikov G.A. Na puti k nizkodoznyim lekarstvam // Vestnik Rossiyskoy akademii nauk. 2007. T. 77. Nr. 10. C. 867-874.

10. Sarnthein-Graf C., La Mesa C. Association of saponins in water and water-gelatine mixtures // Thermochimica Acta. 2004. Vol. 418. Is. 1-2. P. 79-84.

11. Tolstikova T.G., Sorokina I.V., Bryizgalov A.O. i dr. Ispol`zovanie novogo podhoda kompleksoobrazovaniya izvestnyih lekarstvennyih preparatov s rastitel`nyimi glikozidami v profilaktike i kupirovanii ostryih gipertenzivnyih sostoyaniy. Racional`naya Farmakoterapiya v Kardiologii. 2006, Nr.1, S.55-58.

12. Baram N.I., Ismailov A.I., Biktimirov L., Payzieva R.Z., Ziyaev H.L

Proizvodnyie gossipola i ih biologicheskaya aktivnost` // Problemyi I perspektivyi   razvitiya   himii   prirodnyih   i   fiziologicheski   aktivnyih veshestv. Sb.stat. -Tashkent: FAN. 1988. -S.78-99.

13. Baram N.I., Ismailov A.I., Ziyaev H.L., Rezhepov K.ZH. Biologicheskaya aktivnost` gossipola i ego proizvodnyih // Himiya prirodn. soedin. -Tashkent, 2004. - Nr.3. - S.171-176.

14. Sadyikov A.S., ZHdanov V.M., Aslanov H.A., Ershov F.M., Auelbekov S.A., Dushanbieva S. Barinskiy I.F., Kalamkaryan A.G., Ismailov A.I., Biktimirov L., Baram N.I. / Antigerpeticheskoe sredstvo - megosin //  - M.:  A.S. 1062919 SSSR, MKI A61K 31/00

15. O standartizacii megosina i ego lekarstvennoy formyi. Biktimirov L., Ziyaev H.L., Baram N.I., Ismailov A.I. /Sb. "Voprosyi transplantologii i immunosupressii". Tashkent, 1983.- S. 3-12.

16. Haitbaev A.H. Supramolekulyarnyiy kompleks megosina. Fenol`nyie soedineniya: Fundamental`nyie i prikladnyie aspektyi sbornik materialov IX Mezhdunarodnogo simpoziuma Moskva, 20-25 aprelya 2015 goda, S.155.

17. Haitbaev A.H. Modifikaciya osnovaniy SHiffa gossipola s geterociklicheskimi aminami // Himiya Rast. Syir`ya 2014. Nr.1. S. 109-112.

18. Haitbaev A.H. Sintez, stroenie i biologicheskaya aktivnost novyih proizvodnyih gossipola: Avtoreferat dis. na soisk. uchen. step. doktora himich. nauk. Tashkent. NUUz. 2016. -72 s.

To cite this article: D. N. Dalimov, Kh. S. Toshov, A. Kh. Khaitbaev. Synthesis, composition and some physical and chemical properties of supramolecular complexes of glycyrrhizic acid  // Uzbek chemical journal.- 2018. - Nr6. - Pp.3-10.

Received: 29.11.2018; Accepted: 07.01.2019; Published: 24.01.2019

 

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UDK 543.872

¹S. N. Rasulova, ¹V. P. Guro, ¹U. N. Ruziev, ²Z. Ch. Kadirova, ³O. M. Tursunkulov, ³A. A. Sapaeva

KINETICS OF REAGENT OXIDATION OF MOLYBDENE SULFIDE IN SULPHATE ELECTROLYTES. PART 1

¹Institute of general and inorganic chemistry of Academy of sciences of the Republic of Uzbekistan, ²Tashkent’s chemical-technological institute, ³Center of innovation technologies at Ministry of Innovation Development of the Republic of Uzbekistan

Abstract. Background. The sulfide phase of ore minerals is susceptible to passivation under oxidative conditions of hydrometallurgy. Overcoming the passivation of their surface is achieved and justified by kinetic calculations based on model representations.

Purpose: on the example of the behavior of Mo-concentrate, copper sulfide, Kokpatas sulfide flotation concentrate, in nitrate and hypochlorite electrolytes to describe the nature of the resulting products and the kinetics of their dissolution.

Methodology. Samples of Mo-concentrate (38% Mo in the MoS₂ phase), synthetic copper sulfide (100% CuS), Kokpatas flotation concentrate (with pyrite and arsenopyrite - up to 97% in the sulfide phase) were used. The concentration of Cu(II)-, Fe(III)-, Mo(VI)-, and Re(VII)-ions in the solutions was revealed by photo colorimetric and spectrometric (AAS Perkin-Elmer 3030B, ICP-Aligent 7500 ICP MS) methods. Thermal analysis was conducted by derivatograph, microscopy of samples was carried out on scanning electron microscopes: SEM-EDS EVO-MA (Carl Zeiss, Instrum) and JCM – 6000 Neoscope II (Jeol). Spectral analysis - on a Fourier transform infrared spectrophotometer Nicolet iS50 (Thermo Scientific), electronic diffuse reflectance spectra - on a spectrophotometer UV-2600 (Shimadzu), structural and phase analysis - on an XRD Empyrean X-ray diffractometer (PANalytical), kinetics measurements on powdered samples of sulfide concentrates, s:l = 1:7 and 1:75.

Originality. By the example of oxidation of Mo-concentrate samples in a sulphate-hypochlorite electrolyte, over a period of up to 1,800 seconds, the destruction of the phase of Mo, Cu sulphide compounds was established, with their share transformed into the oxide-sulphate phase.

Findings. The kinetics of the oxidation of a number of minerals in the sulfate-hypochlorite electrolyte, in the temperature range 20-40-70 ° C, at atmospheric pressure was studied. The samples of the solid phase after their leaching were studied by the methods of thermal analysis, optical, UV and IR spectroscopy, X-ray diffraction, electron microscopy with probe microanalysis of the surface areas of the grains.

Key words: sulfide minerals, Mo-concentrate, reagent oxidation, leaching, sodium hypochlorite, sulfate background solution.

Highlights:

* the kinetics of Mo-concentrate oxidation was studied within 0-1800 sec period;

* reagent-oxidizing agent of sulphides is used - sodium hypochlorite;

* changes in the structure and composition of samples data were obtained.

References

1. S. Rasulova, V. Guro, M. Ibragimova, E. Safarov. Oxidation and passivation of sulfide ores in gold and molybdenum hydrometallurgy / Sonference proceedings: Metal-2018, 27th In-ternational Conference on Metallurgy and Materials. May 23rd-25th 2018. Brno, Czech Repub-lic, EU. P. 1442-1447.

2. Rasulova S.N., Guro V.P., Ibragimova M.A., Safarov E.T. Okislenie i passivaciya poverhnosti sul`fidnyih rud // Uzb him zh., 2018. - Nr.1. -S. 15-21.

3. D Pugaev, M Nicol, G Senanayake. The mechanisms of the passivation of sulfide min-erals in oxidative leaching processes. Proceedings of 6th Southern African Base Metals Confe-rence 2011.- P.39-48.

4. Bogacheva L.M., Ismatov H.R. Gidrometallurgicheskaya pererabotka med`soderzha-s`hih mineralov. - Tashkent: izd-vo "Fan", 1989. - 116 s.

5. Allabergenov R.D., Ahmedov R.K. Vozmozhnosti gidrometallurgii dlya pererabot-ki mednogo sul`fidnogo syir`ya // Uzb. himich. zh., 2012. - Nr.5. - S.49-51.

6. Potashnikov  YU.M., Lucik V.I.,  CHursanov  YU.V.  Issledovanie  vzaimodeystviya  molibdenita  s  azotnoy  kislotoy  //  Izvestiya  vuzov. Cvetnaya metallurgiya. - 1984. - Nr. 1. - C.  57-61.

7. Izvlechenie molibdena iz sul`fidnoy rudyi  s`helochnyim  rastvorom  gipohlorita  natriya / V.I. Lucik, YU.M. Potashnikov, V.A. Lucik i dr. // Izv. Sib. otd. AN SSSR. Ser. him. nauk. - T. 4. - 1985. - Nr. 11. - S. 49-54.

8. Pleskov V., Filinovskiy V. YU. Vras`hayus`hiysya diskovyiy yelektrod. - M.: Nauka, 1972. - 225 s.

9. Levich V.G. Fiziko-himicheskaya gidrodinamika. - M.: Fizmatgiz, 1959. - 699 s.

10. Klauber,  C.  A  critical  review  of  the  surface  chemistry  of  acidic  ferric  sulphate dissolution  of  chalcopyrite  with  regards  to  hindered  dissolution.  International  Journal  of Mineral Processing, 2008. 86(1-4): 1-17 pp.

11. Rukovodstvo po neorganicheskomu sintezu / Red. G. Brauyer, T.5, M.: Mir, 1985. -S.1652-1653.

12. Kreshkov A.P. Osnovyi analiticheskoy himii. M.: Himiya, 1965. -T. 2. - S.217-218.

13. Andronic L., Isac L., Duta A. Photochemical synthesis of copper sulphide/titanium oxide photocatalyst //Journal of Photochemistry and Photobiology A: Chemistry. – 2011. – V. 221. – Nr. 1. – P. 30-37.

14. Nakamoto К. IR- and Raman spectrums of inorganic and co-ordination substances.  Translated from English. – Moscow. MIR, 1991.

15. Liver A., Grinberg Ya. H., Tulchinsky M.L. Electronic spectroscopy of inorganic substances. In 2 books: – Moscow, MIR 1987.

To cite this article: S. N. Rasulova, V. P. Guro, U. N. Ruziev, Z. Ch. Kadirova, O. M. Tursunkulov, A. A. Sapaeva. Kinetics of reagent oxidation of molybdene sulfide in sulphate electrolytes. Part 1 // Uzbek chemical journal.- 2018. - Nr6. - Pp.10-19.

Received: 07.08.2018; Accepted: 29.09.2019; Published: 24.01.2019

 

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УДК 628.316.12:547.625:677

M. M. Amonova, K. A. Ravshanov

THE KINETICS OF DEPOSITION OF SUSPENDED PARTICLES OF SEWAGE

Bukhara State University, ximiya@mail.ru [2]

Abstract. Background. It is known that textile production consumes a large amount of water – for the production of 1 kg of fabric 100-200 kg of water is spent. Waste water of textile production as the main pollutants contain dyes, heavy metal compounds, surface active substances, harmful organic compounds etc. Wastewater treatment of textile industries from these pollutants is the main task of environmental engineering at the enterprises. Analyzing the current state of waste water treatment methods from dyes, it should be noted their diversity, while the current optimization and search for new methods of treatment remains relevant, as well as the creation of new high-performance and cost-effective technologies for waste water purification from dyes.

Purpose: the deep treatment of wastewater in various manufacturing processes of fabrics using chemical reagents.

Methodology. Modern physical and chemical methods such as IR spectroscopy, photocolorimetry, potentiometry, standard methodology for determining the quality of wastewater (SW).

Originality. For the first time the possibility of using polymer compositions for wastewater treatment of dyeing processes was studied. The features of separation of dye solutions and surfactants depending on pore sizes are investigated.

Findings. The determination of the coefficient of the agglomeration of suspended solids for waste water of enterprises of the cotton industry was investigated. The optimal concentration of components consisting of bentonite, polyacrylamide, sodium bisulfite and aluminum sulfate was revealed.

Keywords: treatment, wastewater, agglomeration, particles, the efficiency of clarification, degree of purification, tissue.

Highlights:

* a composition based on bentonite etc with an improved set of properties was obtained;

* wastewater of the textile industry treatment was studied.

References

1. Efimov A.YA., Tavartkiladze I.M., Tkachenko L.I. Ochistka stochnyih vod predpriyatiy legkoy promyishlennosti. - Kiev: Tehnika, 1985. -S. 61-69, 159.

2. YAkovlev SV., Kalicun V.I. Mehanicheskaya ochistka stochnyih vod. -M.: Stroyizdat. 1972.-S. 138, 140-144, 149-152, 155-158, 160-163.

3. Otraslevoy sbornik metodik provedeniya himicheskogo analiza ves`hestv, primenyaemyih v legkoy promyishlennosti soderzhas`hihsya v stochnoy vode. - M.: CNIITYEI Legkoy promyishlennosti, 1988. - S. 8-9, 24-33, 57-64, 93-101, 107-108, 120-124, 161.

4. Laskov YU.M., Cachev C., Trunova N.A., Stefanova R. Metodika provedeniya yeksperimentov po ochistke stochnyih i prirodnyih vod fiziko-himicheskimi metodami. - Sofiya, 1990. - S. 8-16.

5. Hanturgaev G.A., Artemov N.V.,Tanganova M.V. Regeneraciya stochnyih vod krasil`nogo proizvodstva // Tez. dokl. Vsesoyuzn. nauchno-prakt. seminar-shkolyi "Membrannaya tehnologiya v reshenii yekologicheskih problem".-Ulan-Udye, 1990.- S. 77-80.

6. Hanturgaev G. A., Tanganova M.V. Ochistka stochnyih vod ot krasiteley // Tez. dokl. Mezhdunar. nauchno-prakg. konf,- Irkutsk, 1997,- S.35.

7. Mikrofil`traciya- metod predvaritel`noy ochistki stochnyih vod / Egorova E.V., Andreev G.V., Il`ina M.V. //Tez. Dokl. IVBcepoc. stud. nauchno-prakg. konf. s mezhdunarodnyim uchastiem.- Irkutsk, 1999.- S. 178-179.

8. Pavlova V.V., Pavlov N.N., Korobko L.V. Problemyi ochistki stochnyih vod ot toksichnyih ionov metallov, obrazuyus`hih amfoternyie gidroksidyi. // Tekstil`naya himiya. - 1998g., Nr.2, s.93.

9. Vasil`ev G.V., Laskov YU.M., Vasil`eva E. G. Vodnoe hozyaystvo i ochistka stochnyih vod predpriyatiy tekstil`noy promyishlennosti. - M.: Legkaya industriya, 1976. - 224s.

10. Krasnoborod`ko I.G. Destruktivnaya ochistka stochnyih vod ot krasiteley. - L.: Himiya, 1988.- 192 s.

11. Laskov YU.M., SHamyan V.L. Process otstaivaniya stochnyih vod predpriyatiy tekstil`noy promyishlennosti, // Vodosnabzhenie i sanitarnaya tehnika. Nr. 2, 1998.-S. 8-10.

12. Pavlinova I.I Razrabotka koagulyacionnogo processa ochistki stochnyih vod predpriyatiy trikotazhnoy promyishlennosti. - Avtoref. na soisk. uch. step. kand. tehn. nauk. - M.:MISI im. V.V. Kuybyisheva, 1986.

13. Sosnina N.A., Terehova E.L. Primenenie poliyelektrolitnyih flokulyantov dlya byistroy ochistki mnogokomponentnyih stochnyih vod / Himicheskaya tehnologiya.- M., 2003.- Nr.11.-S. 43-47.

14. Sosnina N.A., Terehova E.L. Primenenie fiziko-himicheskih metodov ulavlivaniya poverhnostno-aktivnyih ves`hestv v mnogokomponentnyih stochnyih vodah // Sb.dokladov Mezhdunar. nauch.-tehn. konf. "YEnergosberegayus`hie tehnologii, metodyi povyisheniya yeffektivnosti rabotyi sistem i sooruzheniy vodosnabzheniya i vodootvedeniya". - Irkutsk: IrGTU, 2003.- S. 108-112.

15.  Sosnina N.A., Terehova E.L. Primenenie poliakrilamiadnyih flokulyantov dlya ochistki stokov, soderzhas`hih APAV // Materialyi 5-y Mezhdunar. nauch.-prakt. konf. FEBRAT-03 "Problemyi transporta Dal`nego Vostoka". - Vladivostok, 2003.-S. 464 - 466.

16. Savdur, S.N. Sistemnyiy podhod v modelirovanii tehnologicheskogo processa ochistki neftesoderzhas`hih stochnyih vod Vestnik Kazan. tehnol. un-ta. - 2010. - Nr. 7. - S. 218 - 226.

17. Danilovich, D. A. Obespechenie yenergoyeffektivnosti processov ochistki stochnyih vod i obrabotki osadka v novaciyah SP 32.13330.2012 "Kanalizaciya. Naruzhnyie seti i sooruzheniya" // CHistyiy gorod. - 2013. - Nr. 1 (61). - S. 18- 21.

18. Kryilov, I. O. Ispol`zovanie prirodnyih shungitovyih sorbentov v sistemah ochistki stochnyih vod : referat 20 // Resursosberegayus`hie tehnologii. YEkspress-informaciya. VINITI. - 2011. - Nr. 6. - S. 10-32.

19. Malahatka, YU. N. Sorbent na osnove aspiracionnoy pyili // Sorbcionnyie i hromatograficheskie processyi. - 2013. - T. 13, vyip. 4. - S. 476-481.

20. Pavlov, D. V., Kolesnikov V. A. Universal`naya sistema ochistki promyishlennyih stochnyih vod // Vodoochistka. - 2013. - Nr. 1. - S. 12-16.

To cite this article: M. M. Amonova, K. A. Ravshanov. The kinetics of deposition of suspended particles of sewage // Uzbek chemical journal.- 2018. - Nr6. - Pp.20-26.

Received: 22.10.2018; Accepted: 05.01.2019; Published: 24.01.2019

 

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INORGANIC CHEMISTRY

 

UDK 621.357(083)

F. N. Fuzaylova, V. P. Guro, A. T. Dadahodzhaev, M. A. Ibragimova

ELECTROLYTE OF CHEMICAL PHOSPHATING OF THE SURFACE OF CARBON STEEL ON THE BASIS OF LOCAL RAW MATERIALS

Institute of General and Inorganic Chemistry, Uzbekistan Academy of sciences

Abstract. Background. To protect carbon steel against atmospheric corrosion paintwork is applied. Inorganic coatings from a chemical phosphate electrolyte are used as a substrate. The phosphate film also serves as a coating for the inter-operational protection and cold deformation of the steel. The need for such compounds in the republic is satisfied by the import of drugs Foscon 35 and Foscon 35M.

Purpose: development of import-substituting compositions for phosphatic electrolytes on the surface of carbon steels and cast irons, similar to Foscon 35 and Foscon 35M.

Methodology. The density of the solutions was determined according to GOST 18995.1; alkalinity - according to GOST 28084-89; pH at 25 ° C according to GOST 22567.5; weight loss of metals during corrosion exposure - according to GOST 28084-89; control of phosphate concentration, in terms of P₂O₅ - according to GOST 13493-86. The conditional total acidity was determined according to TU 2149-205-10964029-2004.

Originality. The development of phosphating compounds functionally similar to imported concentrates Foscon 35 and Foscon 35M, based on local raw materials, was carried out in the republic for the first time.

Findings. Physicochemical parameters of imported drugs Foscon 35 and Foscon 35M, as well as their analogues, which showed their relative proximity, were measured. Solutions are reactive, contribute to the formation of a protective phosphate film on steel.

Keywords: zinc-nitrate-phosphate concentrate, chemical phosphating, iron, carbon to become, surface protection, corrosion.

Highlights:

* the properties of Foscon 35, Foscon 35M preparations and analogues were studied;

* characteristics of imported drugs and local analogues were compared.

References

1. Azhogin F.F., Belen`kiy M.A. i dr. Gal`vanotehnika. Spravochnik. M.: Metallurgiya, 1987. - 736 s.

2. A.s. SSSR No 36126 ot 22.03.1933; vyidano 30.04.1934. CHurakov N.V. Sposob polucheniya smesi fosfatov zheleza, marganca i kaliya pri fosfatirovanii zheleza.

3. Patent RF No 2365765. Sposob polucheniya fosfatnogo pokryitiya. CHumaev-skiy V.A. (RU), Bonokina M.N. (RU), ZHuravleva S.L. (RU) i dr. Patentooblada-tel`: ZAO "FK" (RU) Zayav. 2007135464/02, 24.09.2007 Data otscheta: 24.09.2007. Opubl.: 27.08.2009 Byul. No 24.

4. Izobretenie No 216.013.A056. Rastvor dlya fosfatirovaniya metallicheskoy poverhnosti. ZHuravleva S.L., Konivec F.R., CHumaevskiy O.V. i dr. Pravoobladateli: ZAO "FK", No ohr. dok.: 0002572688. Data ohrannogo dokumenta:20.01.2016.

5. Izobretenie No 216.012.5D58. Rastvor dlya fosfatirovaniya stal`noy po-verhnosti. YAgubova V.L., Mihaylova T.A.  Prav.: ZAO "FK". No ohr dokumenta 0002489517. Data ohrannogo dokumenta 10.08.2013.

6. Izobretenie No 216.012.3386. Sposob fosfatirovaniya rez`biyi i uplotni-tel`nyih konicheskih rastochek muft i metallicheskih predohranitel`nyih detaley trub neftyanogo sortamenta. OAO "Sinarskiy trubnyiy zavod", Grehov A.I., Goncharov V.S., Kress YU. V., Prav.: Goncharov V.S., OAO "Sinarskiy trubnyiy zavod"  No ohr. dokumenta 0002478733. Data ohrannogo dokumenta10.04.2013.

7. Izobretenie No 216.012.4SA7. Sostav rasplava na osnove cinka dlya naneseniya zas`hitnyih pokryitiy na stal`nuyu polosugoryachim pogruzheniem. Paramonov V.A., Vinogradov V.P., Prav.: RF, Minpromtorg RF. No ohr dok 0002485205. Data ohrannogo dokumenta 20.06.2013.

8. Patent RF No 2 354 747.  Sposob polucheniya fosfatnogo pokryitiya. Bonokina M.N. (RU), CHumaevskiy V.A. (RU), ZHuravleva S.L. (RU), Maslova V.I. (RU) i dr. Patentoobl.: ZAO "FK" (RU) Zayav.: 2007127364/02, 17.07.2007. Data patenta: 17.07.2007. Opubl.: 10.05.2009. Byul. No 13.

9. Patent RF No 2 624 566. Sposob fosfatirovaniya magnitomyagkih splavov tipa permalloy (variantyi). Selivanov V.N. (RU), Nikolotov A.D. (RU), Sergunov A.A. (RU) Patent.: FGUP FNPC "PO"Start" im. M.V. Procenko". Zayav.: 2016105087, 15.02.2016. 15.02.2016 Zayav: 15.02.2016 Opubl.: 04.07.2017. Byul. No 19

10. J. I. Wragg, J. E. Chamberlain, L. Chann, H. W. White, T. Sugama, S. Manalis, "Characterisation of Polyacrylic Acid modified Zinc Phosphate Crystal Conversion Coatings", Journal of Applied Polymer Science, V. 50, P. 917-928 (1993).

11. TU 2149-205-10964029-2004, izm. 1, 2, 3.

12. Patent RF No 2380458. Sposob polucheniya cinknitratfosfatnogo koncentrata. YAgubova V.L., Miroshnichenko YU.S., CHumaevskiy V.A. Pat.: ZAO 'FK' (RU). Zayav. 2008122869/15, 06.06.2008; Opub.: 27.01.2010 Byul. No 3.

To cite this article: F. N. Fuzaylova, V. P. Guro, A. T. Dadahodzhaev, M. A. Ibragimova. Electrolyte of chemical phosphating of the surface of carbon steel on the basis of local raw materials // Uzbek chemical journal.- 2018. - Nr6. - Pp.27-31.

Received: 02.10.2018; Accepted: 19.11.2018; Published: 24.01.2019.

 

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UDK 691.542

D. D. Mukhitdinov,  M. I. Iskandarova

INVESTIGATION OF ULTRADISPERSED MICROSILICA AND BASED ON IT CEMENT’S PROPERTIES

Institute of general and inorganic chemistry of Academy of sciences of the Republic of Uzbekistan

Abstract. Background. The stock of high-quality glieges used at cement plants of the republic are exhausted at present time. The fact of high transportation cost of electrophosphorite slag that supplies Uzbekistan leads to increasing of cement cost. Therefore the important problem for cement industry supplying cement enterprises with local natural and man-made raw sources meets the requirements of following State Standard of Uzbekistan (O’z DST) 901-98 “Additives for cement. Active mineral additives and filler additives. Technical conditions.” Which provides necessity in research and development of new sources. In this regard the relevant and modern investigation is the conducting of complex studies of waste microsilica formed during production of ferrosilicon (metallurgical silicon) from local quartz rocks. 

Purpose: determination of  physical and chemical properties of ultradispersed microsilica which was formed during fabrication of ferrosilicon at Uz-Shindong Silicon JV LLC and  study the influence of additives of microsilica on physical and mechanical properties of portland cement.

Methodology. The X-ray diffraction analysis, Differential Thermal analysis (DTA), IR spectroscopy and electron microscopy were used for investigation of physical and chemical properties of microsilica. The physical and  mechanical properties of cement with  additives of  microsilica were determined according to State Standard 310.1-310.4 and results evaluation was carried out in accordance to requirements of State Standard 10178-85 “Portland cement and slag portland cement. Technical conditions”.

Originality. It is established that adding of 10-20 wt.% of microsilica increases the strength of portland cement both in bending and pressing. These properties are provided by filling with amorphous microparticles of cement stone pores that causes by intensive absorption of  Ca(OH)₂, released by C₃S hydrolysis of cement hydration. That leads to additional formation  of hydrosilicate gel and significantly reducing capillary porosity and permeability of  cement stone, provides its increased resistance against frost and aggressive mineral salts.

Findings. The physical and chemical properties of ultradispersed microsilica were defined and its effect on physical and mechanical properties of portland cement was determined. It was revealed that adding of 5-25% ultradispersed microsilica effects positively on strength properties of  cement stone.

Key words: ultradispersed microsilica, physical and chemical properties, additive filler, modified cements, hardening, strength.

Highlights:

* additive of  5-20 % microsilica in cement increases its physical and mechanical properties;

* in the presence of ultradispersed microsilica additional amount of  hydrosilicate gel is formed;

References

1. Portlandcement peschanistyiy. Tehnicheskie usloviya: TU VY 590118065. 562.

2. Cementyi.  Metodiki  opredeleniya  soderzhaniya  dobavok:  STB 1465-2004. - Vved. 01.01.2005.

3. Portlandcement peschanistyiy. Tehnicheskie usloviya: STB 2115-2010.

4. Belov I., Bogdanova N., Homich T. Peschanistyiy portlandcement i ego primenenie //Stroitel`nyie materialyi i tehnologii. -S. 39-41.

5. Semchenko G.D., SHuteeva I.YU., Butenko A.N. i dr.  Zol`-gel` kompozicii polifunkcional`nogo naznacheniya //Har`kov. : Raduga, 2011. -240 s.

6.  Singh I.P., Bhattacharyya S.k., Shah S.P. and others. Studies on early stage hudration of tricalcium silicate incorporating silica nanoparticles: Part.1// Construction and Bilding Materials. - 2015. -Vol. 74. - P. 278-286.

7. Laykaitis A., Keriene J., Kligus M. and others. Influence of Amorphous Nanodispersive SiO₂  additive on structure formation and properties of autoclaved aerated concrete // Materials Science (Medziagotyra). -2010. - Vol. 16 (3). - P. 257-263.

8. Gorbovec M.N.. Polnee ispol`zovat` promyishlennyie othodyi dlya proizvodstva stroitel`nyih materialov //"Stroitel`naya gazeta", Nr. 26.2014.

9. Issledovanie processov gidratacii v sisteme "alyumokal`cievyiy cement - mikrokremnezem" //agrotermal.ru/images/ stat/14.pdf

10. Politaeva A.I., Eliseeva N.I., YAkovlev G.I. i dr. Rol` mikrokremnezema v strukturoobrazovanii cementnoy matricyi i formirovanii vyisolov v

vibropressovannyih izdeliyah // Stroitel`nyie materialyi. - 2015. -Nr 2. - S. 49-55.

11. Antipina S.A., Drozdov L.V. Issledovanie povedeniya mikrokremnezema pri termicheskoy obrabotke // Tr.H Mezhd. Simpoziuma im.akad.M.A.Usova studentov i molodyih uchenyih 2010. Sekciya 15.- s. 1-2

 12. Bryikov A.S. Vliyanie mikrokremnezema v uplotnennoy i suspendirovannoy formah na gidrataciyu portlandcementa i  svoystva portlandcementnyih kompoziciy //ZH. Vyisokoprochnyiy beton. Nr 3. -M. 2010. /file:///c:/usersuser/Descop/mikrokremnezem%20podrobno.rdf.

13. Myhre B. Microsilica in refractory castables. How does microsilica quality influence performance //UNITECR 05: 9-th Biennial Warldwiede cjngress on refractories. nov. 8-11 2005: proceedings. - Orlando. Florida. USA, 2005. - P.191 - 195. 

14. Goberis S., Pundene I., Supudulis YE. Kineticheskie osobennosti alyuminatnogo cementa "Gorkal - 40" v suspenziyah s mikrokremnezemom i polifosfatom natriya //Cement i ego primenenie. 2002. Nr 4. - S. 21-23.

15. Antonovich A.,  Goberis S., Pundene I. i dr. Issledovanie vozmozhnosti primeneniya mikrokremnezema nizkogo kachestva v srednecementnom zhorostoykom betone s deflokulyantom Castament FS 20 /Novyie ogneuporyi. 2007. Nr 5. S. 53-57.

16. Babkov V. V., Gabitov A. I., Sahibgareev R. R., Sahibgareev R. R. Amorfnyiy mikrokremnezem v processah strukturoobrazovaniya i uprochneniya cementnogo kamnya // Bashk. him. zh. , - 2010. T.17.  -S. 206 -210.

To cite this article: D. D. Mukhitdinov,  M. I. Iskandarova. Investigation of ultradispersed microsilica and based on it cement’s properties  // Uzbek chemical journal.- 2018. - Nr6. - Pp.32-40.

Received: 26.12.2018; Accepted: 22.01.2019; Published: 24.01.2019

 

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UDC 66.61. 620.197.3

D. M. Zhumaniyazova, ¹B. S. Zakirov, M. Z. Zhumaniyazov

DEVELOPMENT OF INHIBITOR COMPOSITION OF CORROSION FOR PROTECTION OF STEEL ARMATURE

¹Institute of General and Inorganic Chemistry, Uzbekistan Academy of sciences, Urgench State University, e-mail: ximtex@rambler.ru [3]

Abstract. Background. Reinforced concrete structures in operation are accompanied by the development of corrosion of reinforcement. Various compositions are used to inhibit it. The best results are achieved with the use of inhibitory additives to the cement of sodium and calcium nitrites.

In the Aral Sea region, in the production of reinforced concrete products, highly saline water and quartz sand are used, which contain chlorides and sulfates of calcium, magnesium and sodium in their composition. Therefore, the protection of steel reinforcement in reinforced concrete products produced under the conditions of the Khorezm region and the Republic of Karakalpakstan has become an urgent problem.

Purpose. Development of new types of anticorrosive compositions to protect steel reinforcement of reinforced concrete from corrosion.

Methodology. The physicochemical research methods were used: X-ray phase, IR spectral, elemental analysis.

Originality. It was shown that as a result of the interaction of modified gossypol resin, oxidative destruction of lignin and hexamethylene tetramine, corrosion inhibitors of reinforcement in a reinforced concrete structure based on them were obtained for the first time. According to the study of their physical-mechanical properties, the composition based on them meets the requirements of the relevant standards.

Findings. Inhibitor compositions based on gossypol resin and lignin were synthesized and tested, which action mechanism is characterized by barrier type of protection with the acquisition of properties of rust modifiers.

Key words: concrete, steel reinforcement, corrosion, gossypol resin, lignin, hexamethylenetetramine.

Highlights:

* components of the composition are easily accessible;

* there is a technology of preparation and use of the composition;

* composition is characterized by a high degree of protective and adhesive properties.

References

1. Alekseev S.N., Ratinov V.B., Rozental` N.K. i dr. Ingibitoryi korrozii stali v zhelezobetonnyih konstrukciyah. - M.: Stroyizdat, 1985, - S. 272.

2. M. Drumond, M. Aoyama, C.-L. Cheh and D. Robert, J. Wood Chem. And Technol., 9, 4 (1989) 421.

3. YEpshteyn YA. V., Ahmina E.I., Raskin M.N. Racional`nyie napravleniya ispol`zovaniya gidroliznogo lignina // ZH. Himiya drevesinyi.  -  1977. - Nr6. - S. 24

4.  A. Parta and P. K. Mukhopadhyay, J. Ind. Chem. Soc., 60 (1983) 237.

5.  SHorigina N.N., Reznikov V.M., Elkin V.V. Reakcionnaya sposobnost` lignina. - M.: Nauka, 1976. - 368 s.

6. Patent № 2064021. Ingibitor serovodorodnoy korrozii i navodorazhivaniya metallov i sposob ego polucheniya. Rasulov Z.G., YUr`evyi V.M., Prigoda S.V. Rossiya. MKI S 23F 11/14. Zayavlen.25.08.92  Opubl. 20. 07. 96 . BI №20

7. Andropov L.I., Makushin E.M., Panasenko V.F. Ingibitoryi korrozii metallov. - Kiev: Tehnika. - 1981. - 183 s.

8.  ZHumaniyazov M.ZH., Kurambaev SH.R. ZHumaniyazova D.ZH. Izuchenie fiziko - himicheskih harakteristok gossipolovoy  smolyi i  eyo  modificirovannyih form// ZHurn. "Molodoy uchenyiy"  Moskva  - 2014. - Nr12(80). S. 57-61.

9. Fathullaev YE., Dzhalilov A.T., Minskiy K.S., Mar`in A.P.  Kompleksnoe  ispol`zovanie  vtorichnyih produktov pererabotki hlopchatnika pri poluchenii polimernyih materialov. - Tashkent: Fan, 1988. - 144s.

10. ZHumaniyazov M.ZH., Dyusebekov B.D., Hodzhaev O.F. Qora metallar yuzalarini zanglashdan himoyalash uchun tarkib. //  Patent RUz. IAP 00551 2012.

11. ZHumaniyazov M.ZH. Novyie modifikacii nitrolignina i sintez kompleksnyih soedineniy na ih osnove.Tez. dok. Resp. nauch. prak. konf. "Aktual`nyie problemyi anal.himii". - Termez, 2002.  S. 196.

12.  ZHumaniyazov M.ZH.  Kurambaev SH.R., ZHumaniyazova D.M. Antikorrozionnyiy sostav dlya modifikacii rzhavchinyi metallov// ZHurn. "Kompozicion materiallar" 2015. - Nr 4. -Tashkent .-  S. 47-49

To cite this article: D. M. Zhumaniyazova, B. S. Zakirov, M. Z. Zhumaniyazov. Development of inhibitor composition of corrosion for protection of steel armature  // Uzbek chemical journal.- 2018. - Nr6. - Pp.40-45.

Received: 22.10.2018; Accepted: 26.12.2018; Published: 24.01.2019

 

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ORGANIC CHEMISTRY

 

UDK. 541.1’13+544.183.2

O. SH. Abdulloev, M. M. Muminjonov, K. K. Otakhonov, I. R. Asqarov

THE STUDY OF MECHANISM OF DIAZOTIROZATION REACTION BETWEEN FERROCENE AND M-AMINOBENZOIC ACID THROUGH QUANTUM-CHEMICAL COUNTING

Andizhan state university, e-mail: obidjon1987@mail.ru [4]

Abstract. Background. The diazotization reaction between ferrocene and m-aminobenzoic acid was experimentally fulfilled through numerous ways in several researches. The impact of solvents on fertility of reaction products was studied practically. According to this, when the reaction is done in chloroform atmosphere, the fertility was noticed to improve by 8-10 % compared to diethyl ether atmosphere. However, the impact of solvents on fertility of the reaction products has not been studied through quantum-chemical counting methods yet.

Purpose: to study the impact of the solvents of diethyl ether and chloroform on diazotization reaction products of ferrocene and m-aminobenzoic acid through quantum-chemical counting method.

Methodology. Considering the relationship of product fertility reaction to the activation energy, its calculation was done through the application of “Gaussian 98” program packet “DFT/B3LYP” hybrid method 3-21G based on usage of Hartri energies values of chemicals participating in the reaction.

Originality. The results of research showed that the activation energies of diazotization reaction between ferrocene and m-aminobenzoic acid in chloroform atmosphere (E_a and E_a1), are respectively less at 31,5 and 10 kJ/moll than activation energies (E_’a and E_’a1) in diethyl ether atmosphere. This case theoretically explains that if the current synthesis reaction is done in chloroform atmosphere the fertility of product improves better than those done in diethyl ether.

Findings. According to quantum-chemicalcounting resultsthe activation energies of diazotization reaction between ferrocene and m-aminobezoic acid for mono- and di-exchanged products in chloroform atmosphere are respectively Е_а=158,4 and Е_а1=229,9 kJ/moll, in diethyl ether atmosphere Е_'а=189,9andЕ_'а1=239,9 kJ/moll, and enthalpy changes are △H= -191,5and△H´= -232,8. Higher rate of fertility of products in chloroform than diethyl ether is explained by relatively decreasing of activation energies and thermodynamic stability of emerging compounds.

Key words. Ferrocene, m-aminobenzoic acid, diazotization reaction, chloroform, diethylether, quantum-chemical counting.  

Highlights.

* the impact of diethyl ether and chloroform solvents on productivity of diazotization reaction.

* the results answered the question why the productivity in chloroform atmosphere is higher than in diethyl ether.

Reference

1. A. N. Nesmeyanov, Himiya ferrotsena, Nauka, Moskva, 1969.

2. Askarov I.R. Proizvodnie ferrotsena. Fergana. – 1999. – S.206.

3. Perevalova E. G., Reshetova M. D., Grandberg K. I. Jelezoorganicheskie soedineniya: Ferrotsen. – M.: Nauka. – 1983. – S.544.

4. A. M. Djuraev, Dis. kand. him. nauk, Tashkent, 1994

5. M. X. Mamaraxmonov, L. I. Belenkiy, A. M. Djuraev, N. D. Chuvilkin, I. R. Askarov. Izvestiya Akademii nauk. Seriya himicheskaya, 2017, Nr 4

6. Zhao Q.K., Hu P., Xu H.B. 4-Ferrocenylbenzoic acid. J.Molecules. – Nr 6. – 2001. – p246.

7. Zaib un Nisa, Asghari Gul, Zareen Akhter, Muhammad Arif Nadeem, M. Nawaz Tahir, Moiz Uddin Ahmed. Journal of Organometallic Chemistry 820 (2016) 130-140.

8. Faiza Asghar, Amin Badshah, Saira Fatima, Shumaila Zubair, Ian S. Butler, Muhammad Nawaz Tahir. Journal of Organometallic Chemistry 843 (2017) 48-61

9. Faiza Asghar, Amin Badshah, Bhajan Lal, Ian S. Butler, Saira Tabassum, Muhammad Nawaz Tahir. Inorganica Chimica Acta 439 (2016) 82–91

10. Abdulloev O.SH., Askarov I.R., Abdullaev SH.X., Muminjonov M.M. Universum: Ximiya i biologiya: elektron. nauchn. jurn. − 2018. Nr 11(53). − S. 51-58.

11. Asqarov I.R., Abdulloev O.SH., Mo‘minjonov M.M, Abdullaeva D.SH. “Tovarlar kimyosi muammolari va istiqbollari” V respublika ilmiy-amaliy konferensiya materiallari to‘plami. – 2018y. – B.89-90.

12. M. J. Frisch, G. V. Trucks, H. B. Schlegel at all. Gaussian 09, Revision A.5, Gaussian Inc., Pittsburgh (PA), 1998.

To cite this article: O. SH. Abdulloev, M. M. Muminjonov, K. K. Otakhonov, I. R. Asqarov. The study of mechanism of diazotirozation reaction between ferrocene and m-aminobenzoic acid through quantum-chemical counting // Uzbek chemical journal.- 2018. - Nr6. - Pp.46-53.

Received: 19.11.2018; Accepted: 24.12.2018; Published: 24.01.2019

 

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UDK541.18.665.514:6

B. Z. Adizov, R. J. Eshmetov, D. S. Salihanova,  ¹S. A. Abdurahimov, I. D. Eshmetov

COLLOID-CHEMICAL CHARACTERISTICS OF COMPOSITIONS OF DEEMULGERS FOR DESTRUCTION OF SUSTAINABLE WATER-OIL EMULSIONS

Institute of General and Inorganic Chemistry, Academy of Sciences of Uzbekistan, ¹Tashkent Institute of Chemical Technology, E-mail: bobirjon_adizov@mail.ru [5]

Abstract. Background. At the present stage of development of oil production in Uzbekistan, an increase in the formation of stable water-oil emulsions (VNE) is observed. This is due to the high content of resins, asphaltenes, paraffins and other components, stabilizing the stability of the produced emulsions. Known methods of destruction of stable emulsions do not always allow to obtain commercial oil for processing.

Purpose: to assess the influence of the boundary wetting angle, surface tension and relative detergency of the developed composition of demulsifiers on the destruction of the stability of oil-water emulsions.

Methodology. A comparative study of the colloidal-chemical characteristics of the compositions of the demulsifiers of oil-water emulsions using standard methods of analysis.

Originality. It has been established that the introduction of saponified cotton tar into the composition of demulsifier compositions of stable oil-water emulsions makes it possible to increase its effectiveness due to the directional change of their colloid-chemical properties.

Findings. The influence of the addition of saponified cotton tar on the demulsifying properties of the composition, which are reflected on their surface tension, wetting and detergency, is revealed.

Keywords: colloid chemical indicators, demulsifier compositions, water-oil emulsions, cotton tar.

Highlights:

* data on the surface tension, wetting and detergency ability of demulsifier compositions;

* creation of demulsifier compositions using saponified cotton tar;

* additives of saponified tar increase the washing ability of the oil-water emulsion demulsifier.

References

1. Husnitdinov I.SH. i d.r. Tehnologii pererabotki vyisokoustoychivyih vodo-uglevodorodnyih yemul`siy // Monografiya. - Kazan`: KNITU, 2012 - 180 s.

2. Tronov V.P. Promyislovaya podgotovka nefti. Kazan`: FYEN. - 2000 - 416 s.

3. Aksarin A.V. Sbor i podgotovka skvazhinnoy produkcii: kurs lekcii // Tomsk. TPU - 2000. 216 s.

4. R.ZH. YEshmetov, D.S. Salihanova. "Veroyatnyiy mehanizm razrusheniya vodoneftyanoy yemul`sii pri sovmestnom ispol`zovanii kompozicii deyemul`gatorov i ul`trazvukovogo vozdeystviya" UNIVERSUM: Himiya i biologiya: yelektron nauchnyiy zhurnal. - Rossiya, 2018. - Nr2(44).

5. R.ZH. YEshmetov. "Intensifikaciya processa razrusheniya ustoychivyih vodoneftyanyih yemul`siy s ispol`zovaniem polifunkcional`nyih PAV" UNIVERSUM: Himiya i biologiya: yelektron nauchnyiy zhurnal. - Rossiya, 2018. - Nr 2(44).

6. Adizov B.Z., Abdurahimov S.A. Primenenie sul`firovannogo hlopkovogo soapstoka v kachestve deyemul`gatora dlya razrusheniya ustoychivyih vodoneftyanyih yemul`siy/ Uzbekskiy zhurnal nefti i gaz, 2009, Nr 1. S. 33-34.

7. Adizov B.Z. Nauchnyie osnovyi sinteza deyemul`gatorov iz zhirnyih kislot hlopkovogo soapstoka dlya razrusheniya ustoychivyih vodoneftyanyih yemul`siy/ Aktual`nyie problemyi pererabotki nefti i gaza Uzbekistana. Sbornik trudov Respublikanskoy nauchno-tehnicheskoy konferencii. Tashkent-2012. -S. 29-36

8. Adizov B.Z. Tehnologiya razrusheniya ustoychivyih vodoneftyanyih yemul`sii s ispol`zovaniem mestnyih deyemul`gatorov/ Aktual`nyie voprosyi razvitiya neftegazovoy otrasli Respubliki Uzbekistan, Materialyi nauchno-prakticheskoy konferencii (23 oktyabrya), Tashkent 2015, S. 192-195.

9. Adamson A. Fizicheskaya himiya poverhnostey / Per angl. pod red Z.M. Zorina i V.M. Mullera. - M.: Mir, 1979, 568 s.

10. Voyuckiy S.S. Kurs kolloidnoy himii. - M.: Himiya - 1976 - 511s.

11. Adizov B.Z., Sattorov M.O. Podbor binarnyih kompoziciy  PAV dlya deyemul`girovaniya  stoykih  vodoneftyanyih  yemul`siy. Aktual`nyie problemyi pererabotki nefti i gaza Uzbekistana. Sbornik trudov Respublikanskoy nauchno-tehnicheskoy konferencii. Tashkent-2012. -S.175-178.

12. Adizov B.Z., Ochilov A.A., Abdurahimov S.A. Sozdanie kompoziciy deyemul`gatorov dlya razrusheniya yemul`siy iz tyazhelyih i vyisokoparafinistyih mestnyih neftey. // Aktual`nyie problemyi pererabotki nefti i gaza Uzbekistana. Sbornik trudov respublikanskoy nauchno tehnicheskoy konferencii. Tashkent 2012 - S. 175-178.

To cite this article: B. Z. Adizov, R. J. Eshmetov, D. S. Salihanova S. A. Abdurahimov, I. D. Eshmetov. Colloid-chemical characteristics of compositions of deemulgers for destruction of sustainable water-oil emulsions // Uzbek chemical journal.- 2018. - Nr6. - Pp.53-58.

Received: 28.12.2018; Accepted: 19.01.2019; Published: 24.01.2019

 

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UDK 665.335.1

N. N. Sabirova, K. H. Majidov

DEVELOPMENT OF THE COMPOSITION AND RESEARCH OF THE CHARACTERISTICS OF NEW TYPES OF SHORTENING

Bukhara engineering technological institute of the Republic of Uzbekistan

Abstract. Background: Shortening is a type of fat that allows this product to be used for baking and frying. The composition of shortening used in catering includes 3-15% of fully saturated solid fats, crystallized in the form, the base is a soft partially hydrogenated fat, a mixture of solid animal fat with vegetable oil, or an interesterified fat.

Purpose: To develop the composition and research of new types of shortening based on the products of hydrogenation of cottonseed oil.

Methodology: Shortenings were prepared in laboratory and experimental conditions using hydrogenated cottonseed oil and solid fats. The consistency was assessed by measuring penetration at a temperature of 26.7 ° С

Originality: The functional properties of shortening depend on the solids content were defined. At temperatures from 10 to 15°C shortening was not too hard.

Findings: The use of hydrogenated fats or oils increases the oxidation stability of shortening and stability during frying. To the greatest extent, this occurs under selective hydrogenation conditions and a low iodine number of oil-and-fat mixture.

Key words: shortening, hydrogenated cottonseed oil, solid fats, iodine number, solid triglyceride content, plastic range, consistency, quality indicators.

Highlights:

* shortening with hydrogenated cottonseed oil as a solid fat;

* measurement of penetration showed results close to shortening of palm oil.

References

1. Arutyunyan N.S. Tehnologiya pererabotki zhirov. - M.:Kolos,1999.-368 s.

2. Tyutyunnikov B.N. Tehnologiya pererabotki zhirov. - M.: Pis`hevaya promyishlennost`, 1970. - 652 s.

3. Tyutyunnikov B.N., Gladkiy F.F. Himiya zhirov. - M.:Kolos,1992. - 448s.

4. Banks, D. Industrial frying /"/ Deep Frying. Chemistiy, Nutrition, and Practical Applications / Perkins, E. G., Erickson. M. D., eds. - Champaign, IL: AOCS Press, 1996. - P. 263-264.

5. Stevenson, S. G., Vaisey-Genser, M" Eskin, N. A. M. Quality control in the use of deep frying oils // ' JAOCS, 1984, 61,1102-1108.

6. Weiss, T. J. Chemical adjuncts // Food Oils and Their Uses - 2nd ed. - Westport, CN: AVI Publishing. 1983. - P. 112-113.

7. Weiss, T. J. Frying shortenings and their utilization // Food Oils and Their Uses - 2nd ed. - Wcst- Port, CN: AVI Publishing. 1983. - P. 173.

8. Haumann. B. R. The goal, tastier and "healthier" fried foods // INFORM, 1996, 7, 320-334.

9. Min, D. B., Schweizer. D. Q. Lipid oxidation in potato chips, //JAOCS, 1983. 60. 1662-1665.

10. Vandaveer, R. L. Corn chip frying oils // Chipper/Snacker, 1985, May, 35-38.

11. Arutyunyan N.S., Arisheva E.A. Laboratornyiy praktikum po himii zhirov. - M.: Pis`hevaya prom-st`, 1979. - 176 s.

12. Stopskiy V.S., Klyuchkin V.V., Andreev N.V. Himiya zhirov i produktov pererabotki zhirovogo syir`ya. - M.: Kolos, 1992. – 286 s.

To cite this article: N. N. Sabirova, K. H. Majidov. Development of the composition and research of the characteristics of new types of shortening  // Uzbek chemical journal.- 2018. - Nr6. - Pp.58-62.

Received: 11.12.2018; Accepted: 12.01.2019; Published: 24.01.2019

 

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UDK 543.442.2

¹T. T. Safarov, G. O. Mamajonov, H. CH. Mirzakulov, S. T. Tursunova, Х. S. Beknazarov.

STUDY OF THE VOLATILITY OF SYNTHESIZED PLASTICIZERS IN ACETATE- AND NITRO-CELLULOSE POLYMER MATERIALS

¹Namangan State University, Namangan, Tashkent Institute of Chemical Technology, Tashkent

Abstract. Background. The study of the volatility of plasticizers in acetate and nitrocellulose polymeric materials is necessary for determining the assessment of their effectiveness. Synthesized plasticizers effectively reduce the glass transition temperature and the rate of migration from polymer film materials, ensuring that they retain good physical and mechanical properties.

Purpose: to develop and obtain paintwork materials using local raw materials from industrial waste as a source of raw materials in plasticizers with a combination of valuable and useful properties.

Methodology. The volatility of the synthesized and used plasticizers was studied - plasticizers were synthesized based on fusel spirs and phthalic anhydride (I), - at a temperature of 100 ° C, and DOP (di (2-ethylhexyl) phthalate) and DBP (dibutyl phthalate) plasticizers were also used. The film thickness was measured using an IZV-1 thickness gauge with an accuracy of 0.5 μm.

Originality. Cellulose nitrate was synthesized with a degree of substitution of 11% (colloxylin) by a new low-concentrated method in a PKC solution. The volatilities of the synthesized plasticizers in the acetate and nitrocellulose film were studied.

Findings. It was established that for all samples the induction period is almost the same (about 10 minutes), due to the unsteady nature of evaporation during the heating of plasticizers to the temperature of the experiment. It was determined that the existence of the induction period is associated exclusively with heat transfer, which is confirmed by the absence of influence on the value of this magnitude of the nature of the compounds under study.

Keywords: cellulose acetate, nitrocellulose, colloxylin, plasticizer, fusel alcohol, phtalic anhydride.

Highlights.

* cellulose nitrate is synthesized with a degree of substitution of 11%;

* for all samples, the induction period is the same (about 10 minutes)

References

1. Li, Lili; Frey, Margaret. Preparation and characterization of cellulose nitrate-acetate mixed ester fibers // Polymer. Jul 2010, Vol. 51 Issue 16, p3774-3783. 10p. DOI: 10.1016/j.polymer. 2010.06.013.

2. Monisha, S. Mathavan, T. Selvasekarapandian, S. Milton Franklin Benial, A. Aristatil, G. Mani, N. Premalatha, M. Vinothpandi, D. Investigation of bio polymer electrolyte based on cellulose acetate-ammonium nitrate for potential use in electrochemical devices // Carbohydrate Polymers. Feb2017, Vol. 157, p38-47. 10p. DOI: 10.1016/j.carbpol.2016.09.026.

3. Necula, Adina. Maria, Stoica. Iuliana, Olaru. Niculae Doroftei, Florica Ioan, Silvia. Silver Nanoparticles in Cellulose Acetate Polymers: Rheological and Morphological Properties // Journal of Macromolecular Science: Physics. Apr.2011, Vol. 50 Issue 4, p639-651. 13p. DOI: 10.1080/00222341003784790.

4. Mousaviazar, Keshavarz, Mohammad. Hayaty, Mehran. The effect of cellulose derivatives on the phase transition and thermal behavior of ammonium nitrate // Journal of Thermal Analysis &Calorimetry. May 2017, Vol. 128 Issue 2, p1049-1056. 8p. DOI: 10.1007/s10973-016-6031-4.

5. Gorey, Colleen. Escobar, Isabel C. N-isopropylacrylamide (NIPAAM) modified cellulose acetate ultrafiltration membranes // Journal of Membrane Science. Nov2011, Vol. 383 Issue 1/2, p272-279. 8p. DOI: 10.1016/j.memsci.2011.08.066.

6. Son, Won Keun. Youk, Ji Ho. Park, Won Ho. Antimicrobial cellulose acetate nanofibers containing silver nanoparticles // Carbohydrate Polymers. Sep2006, Vol. 65 Issue 4, p430-434. 5p. DOI: 10.1016/j.carbpol.2006.01.037.

7. Ebadzadeh, Touradj. Sharifi, Leyla. Synthesis of ι-Al2O3 from a Mixture of Aluminum Nitrate and Carboxymethyl Cellulose // Journal of the American Ceramic Society. Oct2008, Vol. 91 Issue 10, p3408-3409. 2p. DOI: 10.1111/j.1551-2916.2008.02551.x.

8. Toxqui-López, S. Olivares-Pérez, A. Fuentes-Tapia, I. Polyvinyl acetate with cellulose dinitrate holograms // Optical Materials. Mar2006, Vol. 28 Issue 4, p342-349. 8p. DOI: 10.1016/j.optmat.2005.01.022.

9. Zhu, Chunyu. Han, Cheng-gong. Saito, Genki. Akiyama, Tomohiro. Facile synthesis of MnO/carbon composites by a single-step nitrate-cellulose combustion synthesis for Li ion battery anode // Journal of Alloys & Compounds. Dec2016, Vol. 689, p931-937. 7p. DOI: 10.1016/j.jallcom.2016.08.054.

10. John, Amalraj. Chen, Yi. Kim, Jaehwan. Synthesis and characterization of cellulose acetate–calcium carbonate hybrid nanocomposite // Composites: Part B, Engineering. Mar2012, Vol. 43 Issue 2, p522-525. 4p. DOI: 10.1016/j.compositesb.2011.08.021.

11. Cheng, H.N. Dowd, Michael K. Selling, G.W. Biswas, Atanu. Synthesis of cellulose acetate from cotton byproducts // Carbohydrate Polymers. Apr2010, Vol. 80 Issue 2, p450-453. 4p. DOI: 10.1016/j.carbpol.2009.11.048.

12. Khanahmadzadeh, S. Hosseiny, G. Synthesis, Characterization, and Thermal Properties of Fe 2 TiO 5 /Cellulose and Cellulose Acetate Nanocomposites // Synthesis & Reactivity in Inorganic, Metal-Organic, & Nano-Metal Chemistry. 2016, Vol. 46 Issue 5, p713-717. 5p. DOI: 10.1080/15533174.2014.989530.

13. Das, Archana M. Ali, Abdul A. Hazarika, Manash P. Synthesis and characterization of cellulose acetate from rice husk: Eco-friendly condition // Carbohydrate Polymers. Nov2014, Vol. 112, p342-349. 8p. DOI: 10.1016/j.carbpol.2014.06.006.

14. Neelapala, Satya Deepika. Nair, Abhinav K. Jagadeesh Babu, P.E. Synthesis and characterisation of TiO 2 nanofibre/cellulose acetate nanocomposite ultrafiltration membrane // Journal of Experimental Nanoscience. Dec2017, Vol. 12 Issue 1, p152-165. 14p. DOI: 10.1080/17458080.2017.1285446.

15. Chen, Jinghuan. Xu, Jikun. Wang, Kun. Cao, Xuefei. Sun, Runcang. Cellulose acetate fibers prepared from different raw materials with rapid synthesis method // Carbohydrate Polymers. Feb2016, Vol. 137, p685-692. 8p. DOI: 10.1016/j.carbpol.2015.11.034.

16. Waheed, Sidra. Ahmad, Adnan. Khan, Shahzad Maqsood. Gul, Sabad-e. Jamil, Tahir. Islam, Atif. Hussain, Tousif. Synthesis, characterization, permeation and antibacterial properties of cellulose acetate/polyethylene glycol membranes modified with chitosan // Desalination. Oct2014, Vol. 351, p59-69. 11p. DOI: 10.1016/j.desal.2014.07.019.

To cite this article: T. T. Safarov, G. O. Mamajonov, H. CH. Mirzakulov, S. T. Tursunova, Х. S. Beknazarov.  Study of the volatility of synthesized plasticizers in acetate- and nitro-cellulose polymer materials // Uzbek chemical journal.- 2018. - Nr6. - Pp.63-67.

Received: 28.12.2018; Accepted: 19.01.2019; Published: 24.01.2019

 

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UDK 675.04.016:541

N.R.Ashurov, Sh. G. Sadykov, E. O. Khakberdiev, A. F. Reimov

OBTAINING AND PROPERTIES OF COLLAGEN SOLUTION

Институт химии и физики полимеров АН РУз, г. Ташкент, 100128,ул. А. Кадыри 7 “б”, E-mail:haqberdiyev@mail.ru [6]

Abstract. Background. Collagen, one of the most common natural proteins, is the bulk of the skins of animals. Isolation of collagen and its use is one of the methods of rational disposal of waste raw skin. At the same time, a valuable target product can be obtained from a collagen-containing composition, including biodegradable polymeric materials.

Purpose. To study the effect of the kinetic parameters of the process of collagen release on its property.

Methodology. The structure and properties of selected samples of collagen were studied by infrared spectroscopy, nuclear magnetic resonance and thermogravimetry. It was found that macromolecules of isolated collagen consist of a number of amino acids, namely, alanine, valine, leucine, lysine, phenylalanine or histidine, arginine, serine, threeonine, proline and hydroxyproline, as well as products of partial hydrolysis of protein.

Originality. The optimal conditions for the release of collagen from raw skin are established and the properties of its solutions are determined.

Findings. It has been established that the relative viscosity of collagen solutions is inversely proportional to the alkali concentration and temperature. In an alkaline medium, the breaking of intermolecular bonds and partial hydrolysis of the protein occurs. The tertiary and quaternary structures of the protein are destroyed, the partially hydrolyzed, water-soluble primary structure remains.

Keywords: collagen, time of dissolution, amino acids, raw skin waste, relative viscosity.

Highlights:

* the resulting microheterogeneous solutions of collagen was obtained;

* these solutions have low polydispersity and are stable over time.

References

1. D.J.Prockop, A.Fertala. Inhibition of the Self-assembly of Collagen I into Fibrils with Synthetic Peptides Demonstration That Assembly Is Driven By Specific Binding Sites On The Monomers // J. Biol. Chem. 1998. V. 273 (25). P. 15598- 15604.

2. Tang K., Wang F., Lia P., Liu J., Wang K. Thermal degradation ki-netics of sweat soaked cattle hide collagen fibers // J. Amer. LeatherChem. Assoc. 2007. Nr2. P.52-61.

3. Berkhaut X. Y., Garsiya Del` Rio H.R. Sposob obrabotki shkur zhivotnyih. Patent Rossiyskoy Federacii Nr 2322510, 01.2006.

4. Poluboyarov V.A., Voloskovaya E.V., YAnkovoya V.V., Gur`yanova T.P. Intensifikaciya processa rastvoreniya kollagena s pomos`h`yu mehanohimicheskoy obrabotki // Himiya v interesah ustoychivogo razvitiya. 2009. Nr2. S. 183-189.

5. Rabinovich David. Regulirovanie himicheskoy aktivnosti kolla-gena: peresmotr yeffekta Gofmeystera // WorldLeater. 2008. Nr3. S.26-29

6. Tihonova YU.V, Krivonosova L.G., Lomakin S.P., Filatova YE.S., Habibullin R. Svoystva produktov gidroliza kollagena // Bashkirskiy himicheskiy zhurnal. 2009. Nr1. S. 13-15.

7. Jiang Vo, Zhou Yong, Yang Zheng, Wu Zhihong, Huang Guanglin, Lin Libin, Zhang Xingdong. Radiation curing of collagen/divinyl etheren-hanced bypyridinium salts // J. Appl. Polym. Sci. 2005. Nr 5. P.2094-2100.

8. Maravich Tat`yana, Breski Lorenco, Komba Allegra i dr. YEkspe-rimental`noe ispol`zovanie praymera na osnove akroleina v kachestve kollagenovogo sshivayus`hego agenta dlya dentinovogo svyazyivaniya // ZHurnal stomatologii. 2018. Tom 68. Nr1. S.85-90.

9. Freiberger Kollagen symposium. Leder und Hautemarkt. 2004. Nr 8-9. P. 10.

10. S.H.Karimov, A.S.Rafikov, D.A.Abduvohidov, U. N. Abdurahma-nov. Privitaya sopolimerizaciya metilmetakrilata s kollagenom dlya ognezas`hitnoy obrabotki materialov // Problemyi tekstil`ya. 2013. Nr 1. S.51- 54.

11. Karimov S.H., Nabiev N.D., Rafikov A.S. Fiziko-himicheskie svoystva privityih sopolimerov kollagena i fibroina s poliakrilo-voy kislotoy // Plasticheskie massyi. 2017. Nr 11-12, S.5-8.

12.  Long Keying, CHa Ruitao, CHzhan YApi i dr. Nanokristallyi cellyu-lozyi v kachestve podkrepleniy dlya obolochek na osnove kollagena s nizkoy peredachey gaza// Cellulose. 2018. Tom 25. Nr 1. S.463-471.

13. Go Rui, Lan YUn, Syuye Vyey i dr. Kollagenovo-cellyuloznyie na-nokristallicheskie karkasyi, soderzhas`hie mikrosferyi, napolnennyie kurkuminami, pri vosstanovlenii ozhogov s polnoy tols`hey // ZHurnal tkaney, inzhinering i regerativnaya medicina. 2017. Tom. 11. Nr 12 S 3544- 3555

14. CHzhou YUan`, Li Song, YUan` Bo i dr. Izgotovlenie kollagenovyih NAR-volokon Core-Shell s pomos`h`yu koaksial`nogo yelektroprovoda s ispol`zovaniem netoksichnogo rastvoritelya // Nauka rasshirennyih materialov. 2018.Tom. 10. Nr 1. S. 18-23.

15. Jose Mopsu V., Thomas Vinoy, Dean Derrick R., Nyairo Elijah. Fa-brication and I Characterization of aligned nanofibrous PLGA/Collagen blends as of pone tissue scaffolds//Polymer. 2009. Nr 15. P.3778-3785.

16. Lyu Iyun`, YU CHeng, CHyen` YAfan i dr. Byistroe izgotovlenie sta-bil`noy hryas`hevoy tkani s ispol`zovaniem kul`turyi mikrosfer kol-lagenovogo gidrogelya // ZHurnal materialov himii. 2017. Tom. 5. Nr 46. S.9130-9140.

To cite this article: N. R. Ashurov, Sh. G. Sadykov, E. O. Khakberdiev, A. F. Reimov. Obtaining and properties of collagen solution  // Uzbek chemical journal.- 2018. - Nr6. - Pp.68-74.

Received: 13.12.2018; Accepted: 05.01.2019; Published: 24.01.2019

 

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ANALYTICAL CHEMISTRY

 

UDK 547.65;547.655;543.432;546.49

I. I. Juraev,  Z. A. Smanova, D. A. Gafhyrova, D. N. Shahidova

SORBTION PHOTOMETRY AT DETERMINATION OF COPPER IONS

National university of Uzbekistan

Abstract. Background: analysis of litrature data has shown the increasing interest to problem of immobilized reagents on polymeric sorbents. Possibility of selective extraction of elements, good kinetical characteristies of sorbents couse possibility of uzing complexoforming immobilizate reagents on bearers for concentration of elements from solutions of complex composition and their extraction from large volumes.

Purpose: elabaration of sorbtion-spectrometrical method of determinntion of copper ions by new synthesized reagent 1-(2-pyridilazo)-2-oxynaphtalin-3,6-disnlphoacid solium6.

Metodology. Optimal conditions of sorbtion ions of Cu(II) in statical and dinamical conditions by sorbsionno-photometrical method in dependencl on time, acidity of medium,temperature and some others factors have been determined.

Originality: using of immobilized reagents of polymeric bearers has allowed to improve value of coeffictent of distribution and also some analytical and metrological parameters of preposed metode of determination ions Cu²⁺

Findings. Optimal conditions of immobilization and complexorformation of copper ions (II) by immobilized reagent on e fibrous sorbent in dependenc on nature of medium, time of sorbtion and volume have been determined. It was shown at investigation of pH influence on sorbtion of ions Cu(II) that sorbent has extracted them in range of pH 3,0-7,7 (97%).

Keywords: analytical reagent 1-(2-pyridilazo)-2-oxynaphtalin-6-sulphoacid natrium, immobilization,sorbtion spektroskopy, sorbtion, copper ions (II).

Highlitghs:

* investigations in field of using of immobilized organical reagent on fibrous sorbents;

* division and concentration of copper ions.

References

1.SHvoeva O.P., S`Herbinina N.I., Myasoedova G.M., Sorchan A.M., Senyavin M.M., Savvin S.B. Koncentrirovanie i razdelenie yelementov na helatnyih sorbentah. Vyibor usloviy koncentrirovaniya medi i serebra iz solevyih rastvorov // ZHurn. analit. himii. -1983.-T. 38.-Nr 2.-S. 221-226.

2.Bryikina G.D., Didenko T.E., Agapova G. F. Opredelenie mikrokolichestv medi i palladiya metodom proizvodnoy tverdofaznoy spektrofotometrii v prisutstvii PAV //ZHurn. analit. himii. -1988.-T. 43.- Nr 12.-S.2195-2199.

3.Tihomirova T.I., Kuznecov M.V., Fadeeva V.I., Ivanov V.M. Sorbcionno-spektroskopicheskoe opredelenie medi, rtuti i aminov s ispol`zovaniem himicheski modificirovannyih kremnezemov //ZHurn. analit. himii.-2000.- T.55.- Nr.8.-S.816-820.

4. Bryikina G. D., Marchak T.V.,Belyavskaya T.A. Sorbciya ionov medi i nikelya anionoobmennikom AV-17h8, modificirovannyim sol`yu 1-(-2-tiazolilazo)-2-naftol-1,3-disul`fokislotyi // ZHurn. analit.himii .-1982.-T. 36.- Nr 12.-S.2361-2364.

5. Ivanov V.M., Polyanskov R.A., Sedova A.A. Sorbciya medi(II) vismutolom 1, immobilizovannyim na prirodnom ceolite // Vest.Mosk.un-ta.-Ser.2.- Himiya.-2005.-T.46.- Nr 1.-S.61-65.

6. Morosanova E.I.,Velikorodnyiy A.A., Nikulin I.V.,Puganova E.A., Zolotov YU.A. Kserogeli, modificirovannyie 1-(2-piridilazo)-2-naftolom i ksilenolovyim oranzhevyim. Indikatornyie trubki dlya opredeleniya medi(II) i zheleza(III) v rastvorah // ZHurn. analit. himii. -2000.-T.55.- Nr.5- S.539-545.

7. May Do Thyui, Mihalenko  I.I. Adsorbciya  krasiteley na uglerodnyih materialah  s  nanesennyimi ionami serebra, medi i zolota // Uspehi   v himii i himicheskoy tehnologii. Tom XXVII. 2013. Nr 6, S.54-57.

8.Bryikina G.D., Kryisina L.S., Ivanov V.M. Tverdofaznaya spektrofotometriya // ZHurn. analit. himii.-1988. -T. 43.- Nr 9.- S. 1547-1559.

9.Smanova Z.A. Sorbcionno-fotometricheskoe opredelenie medi na poverhnosti polimernogo nositelya //Vestnik NUUz, Tashkent,2010.- Nr 3.-S.97-102.

10.Kochigin O.V. Issledovanie polimernyih helatnyih sorbentov. //ZHurn.analit.himii.-2006.-T.61.- Nr 2.- S.120-124.

11. Hodzh P., SHerrington D. Reakcii na polimernyih podlozhkah v organicheskom sinteze. -M.: Mir, 1983.- S.112-179.

12. Vigleb G. Datchiki. - M.: Mir, 1989.-S.196-198.

13.Musaev U.N. Nauchnyie osnovyi sinteza i primeneniya funkcional`nyih polimerov. Vestnik TashGU.-Tashkent, 1997.- Nr 1.-S.50-54.

14. Dmitrienko S.G. Sintez i issledovanie sorbcionnyih svoystv polimerov //ZHurn.analit.himii.-2006.- T.61.- Nr 1.- S. 18-24.

15. Savvin S.B. Modificirovannyie i immobilizovannyie organicheskie reagentyi.// ZHurn.analit.himii.1996, T.51, Nr 1, S.49-56.

16. Gafurova D.A. Himicheskie prevras`heniya poliakrilonitril`nyih volokon s azotsoderzhas`himi osnovaniyami. Avtoref. na soisk. uchenoy step. k.h.n. po spec. him. vyisokomol. soed. Tashkent. 2002. 22 s.

17. Musaev U.N., Muhamediev M.G., Ikramova M.YE. Sintez modificirovannyih sorbentov na osnove poliakrilonitril`nyih volokon. Nauchnyiy vestnik NamGU.2001. ¹2. S.117-119.

18.Korostyilev P.P. Prigotovlenie rastvorov. M.: Mir. 1962. S.203-206.

19. Lur`e YU.YU.Spravochnik po analiticheskoy himii. M.: Himiya. 1979. 480s.

20. Zaporozhec O.A., Gaver O.M., Suhan V.V. Immobilizaciya reagentov na poverhnosti nositeley. // Uspehi himii.-1997. T 66, Nr 7, S.702-712.

21. Smanova Z., Yangibayev A., Yakhshieva Kh., Raximov S. Chemism of complex formation of pyridine and anabasine dyes. Austrian Journal of Technical and Natural Sciences. Nr 1-2. 2017. R. 132-134  

22. Smanova Z.A., ZHalilov M. Sorbcionno-spektroskopicheskoe opredelenie medi i svinca immobilizovannyimi reagentami. // Andizhon DU habarnomasi. - Andizhon, 2016. - Nr 4. -S. 295-297.

23. Smanova Z.A., Gafurova D.A., Savchkov A.V. Disodium 1-(2-Pyridylazo)-2-oxynaphthalene-3,6-disulfonate: An Immobilized Reagent for Iron(III) Determination// Russian Journal of General chemistry. 2011. Vol.81.- Nr 4.-p.739-742.

24. Smanova Z.A., Inatova M.S. // Himicheskaya promyishlennost` - 2017. T. XCIV. -Nr5. - 266-278.

25. Smanova Z.A.Novyie organicheskie reagentyi dlya koncentrirovaniya i tverdofazno-spektrometricheskogo opredeleniya metallov pri analize vod.  Himich. promyishlen.-Sankt-Peterburg, 2011. S.303-308

To cite this article: I. I. Juraev,  Z. A. Smanova, D. A. Gafhyrova, D. N. Shahidova. Sorbtion photometry at determination of copper ions // Uzbek chemical journal.- 2018. - Nr6. - Pp.75-80.

Received: 30.10.2018; Accepted: 21.12.2018; Published: 24.01.2019

 

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UDK543.432:542.61:535.24:546.72.

L. S. Rakhimova,  A. Sh. Giyasov,  N. B. Mutarova, A. A. Shakhakimova

ELECTORAL ECOANALYTIC EXTRACTION-PHOTOMETRIC METHOD OF DETERMINATION OF IRON (III) WITH I- (2-PYRIDYLAZO) -2-NAPHTHOL

Ташкентский государственный технический университет, e-mail:latofat 2011@ mail.ru".тел: +998973448502

Abstracts. Background. The increasing requirements to environmental protection in the Republic put forward before chemists analysts the task to develop in hardware registration of simple, express, sensitive and selective methods of definition of micro concentration of substances particularly of heavy and toxic elements.

Purpose. To search the selective eco-analytical methods of definition of eko-toxicants in materials, complex on the chemical composition.

Methodology. Recently it is known that apply new reception extraction of colourless complexes of elements to increase in selectivity of methods of definition of elements inert organic solvents, with the subsequent addition to extract of organic dyes and their complex formation directly in an organic phase. Initial solution of iron (III) was prepared from salt of nitrate of iron (III), the hch brand. The caption of solution was established electrometric by means of potassium bichromate.

Originality. The developed method of extraction and photometric definition of iron with I-(2-piridylazo)-2-naphthol differing from existing selectivity, sensitivity, simplicity and an expressnost, is recommended for the analysis of production solutions, sewage, ores, concentrates and others in materials, complex on the chemical composition, without office of the accompanying ions directly in an organic phase.

Findings. As a result of a research the new method of selective extraction of iron and complex formation with SIR azoreagent in an organic phase is developed.

Keywords: express method, extraction, photometric, spectro-photometric, complex ion,

Highlights:

* the mechanism of extraction and complex formation is revealed;

* the structure of a structure of complexes is defined;

* certain conclusions are drawn on increase in selectivity and sensitivity of photometric reactions.

References

1. Pyatnickiy I.V., Kolominec L.L., Simyanenko V.I., Barshevskaya V.S. Vyisokoizbiratel`nyiy metod fotometricheskogo opredeleniya zheleza (III) s glicinkrezolovyim krasnyim. Zavodskaya laboratoriya,1989.T.55.Nr7. S.1-3.

2. Vasil`ev V.P. Analiticheskaya himiya..CH 2 Fiziko-himicheskie metodyi analiza. Ucheb.dlya Himiko-tehnol.spec.vuzov.-M: Vyissh.shk., 1989.-384 s.

3. Primak A.V. Balterans P.B. Zas`hita okruzhayus`hey sredyi na predpri-yatiyah stroyindustrii.-K.: Budivel`nik, 1991.-152 s.

4. Analiticheskaya himiya. himicheskie metodyi analiza. red. M:Himiya, 1993

5. DashdyendyevBurmaa. Analiticheskie aspektyi ispol`zovaniya fotomet-richeskih i cvetometricheskih harakteristik kompleksov redkozemel`nyih yelementov s piridinovyimi azosoedineniyami. Avtoref.kand.diss. M:.2000. S.147.

6. ZHukov A. F., Kolosova I. F., Kuznecov V. V. i dr.; Pod red. O. M. Petruhina. Uchebnik dlya vuzov - M.: Himiya, 2001. - 496 s.

7. Zolotov YU.A., Ivanov V.M., Amelin V.G. Himicheskie testyi-metodyi analiza.-M.: Editorial. URSS.2002.-304 s.

8. Kratkiy spravochnik fiziko-himicheskih velichin. izdanie 9. red., 10-e izdanie. spb.: Ivan Fedorov. 2003

9. Rustamova U. N., Rustamov N. YEkstrakcionno-fotometricheskoe opredelenie medi(II) s 2, 4-dinitrobenzolazo pirokatehinom i aromaticheskimi diaminami // Molodoy uchenyiy. 2009. Nr5.S. 24-26. URLhttps://moluch.ru/archive/5/374/ [7]

10. Giyasov A.SH., Kushnazarov P.I. Prostoe i yekspressnoe yekstrakcionno-spektrofotometricheskie opredelenie vol`frama s pomos`h`yu rodanid-ionov.  Vestnik tehnologicheskogo universiteta.- Kazan`. 2016. T.19. S.47-50.

11. Kurkova T.N., Zeleckene E.P. YEkstrakcionno-fotometricheskie re-akcii-metod analiza prirodnyih ob``ektov na soderzhanie galogenid-ionov red. M: Himiya

12. Zuhair A-A. Khammas, Hawraa M. Abdulkareem. A New Visible Spec-trophotometric Approach for Mutual Determination of Amoxicillin and Metoclo-pramide Hydrochloride in Pharmaceuticals After Cloud Point Extraction // Science Journal of Analytical Chemistry, 2016. 4(5):R 66-76.

To cite this article: L. S. Rakhimova,  A. Sh. Giyasov,  N. B. Mutarova, A. A. Shakhakimova. Electoral ecoanalytic extraction-photometric method of determination of iron (III) with i- (2-pyridylazo) -2-naphthol  // Uzbek chemical journal.- 2018. - Nr6. - Pp.80-86.

Received: 21.11.2018; Accepted: 21.01.2019; Published: 24.01.2019

 

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