Study of the thermal and temperature conditions of flat and inclined lands tekis va qiyalik yerlarning issiqlik va temperatura rejimini o
Results of verification of the procedure for the determination of iron (III) in model solutions
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11 ГулДУ Ахборотнома 2021 Табиий №1 1
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- * GULISTON DAVLAT UNIVERSITETI AXBOROTNOMASI, Tabiiy va qishloq xo‘jaligi fanlari seriyasi. 2021. № 1 36 Conclusion
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Results of verification of the procedure for the determination of iron (III) in model solutions
(n = 3, P = 0.95) Introduced iron, mg/l Obtained iron, mg/l s s r 2,0 1,91 2,08 2,17 0,046 0,022 Note: n is the number of parallel determinations, P is the confidence level, s is the standard deviation, s r is the relative standard deviation. Thus, the proposed method for the determination of iron (III) ions, high selectivity, fast performance, and ease of analysis make it possible to use them in the practice of chemical analysis when detecting iron (III) ions in various objects. * GULISTON DAVLAT UNIVERSITETI AXBOROTNOMASI, Tabiiy va qishloq xo‘jaligi fanlari seriyasi. 2021. № 1 36 Conclusion The conditions for the spectrophotometric reaction of the iron ion with the monoammonium salt of glycyrrhizic acid have been optimized. According to the results of the study, it can be concluded that the accuracy and sensitivity of the analysis depends on the structure and amount of the reagent, as well as on the nature and concentration of the buffer solution. The absorption spectra of the reagent and its complex with the iron (III) ion were obtained under the selected optimal conditions. Spectral characteristics were determined - absorption maxima (l max =440 nm) and the actual molar extinction coefficient of the complex (ε =3,425·10 2 ). References: 1. Umarov A.A., Utkirov U.B., Kim A.R., Aronbaev S.D. Aronbaev D.M.Dvenadtsat printsipov «Zelenoy ximii» kak novaya kontseptualnaya sistema razvitiya ximicheskoy nauki i ximicheskoy texnologii //Sb.nauchn.statey po itogam rabo to’ Mejd.nauchn. Foruma. t.1.- M:.Izd-vo Infiniti. – S.125-130 (in Russian). 2. Aronbaev S.D. Biosorbtsionnoe kontsentrirovanie tyajelo’x metallov i radionuklidov mikroorganizmami i sorbentami na ix osnove. Obzor//Molodoy ucheniy, 2015. № 24(104). – S.31- 50 (in Russian). 3. Aronbaev S.D. Biosorbtsiya ekotoksikantov saxaromitsetami. Primenenie v analize Monografiya. - LAP Lambert, 2016. – 248 s. (in Russian). 4. Aronbaev S.D., Ziydullaeva G.Z. Minirewew of potentially low cost biosrbents from natural products for removing of heavy metals //European science review, 2014, №11-12 (November- December) –P. 88-92 . (in Russian). 5. Aronbaev S.D. Biosorbtsiya ekotoksikantov saxaromitsetami. Primenenie v analize .Monografiya.- LAP Lambert, 2016. – 248 s. (in Russian). 6. Yuldasheva X.A., Muxamediev M.G., Dalimov D.N., Gafurov M.B., Mixalchik T.A.// Sintez molekulyarno’x kompleksov monoammonievoy soli glitsirrizinovoy kisloto’ s benzoynoy i salitsilovoy kislotami i issledovanie vyazkosti ix vodno’x rastvorov. Ximiya i ximicheskaya texnologiya. 2011. №1. -S. 24-26. (in Russian). 7. Stepanova E.F. Sposob polucheniya glitsirama // A.S. 827065, SSSR.-Opubl. 7.05.1981,- Byul. № 17. //RJXim.- 1981,- 23 O 163 P. (in Russian). 8. Patent RF № 2 299 740. Sposob polucheniya monoammoniynoy soli glitsirrizinovoy kisloto’ (glitsirama) / Kondratenko R. M. ,Baltina L. A., Stolyarova O. V., Baltina L. A.,i dr. // Byull. 2007 .- № 15. (in Russian). 9. Yu.T.Isaev, D.N.Dalimov, N.N.Tuxtaboeva. Vliyanie proizvodno’x glitsirrizinovoy kisloto’, soderjahix iono’ metallov na vsxojest semyan xlopchatnika. Nauchno’y Vestnik AndGU. 2015. - №1. - S 21-24. 10. Abduraxmanova U.K., Nishonov R.A. Kolichestvennoe issledovanie kompleksov metallov, poluchenno’x na osnove prirodno’x soedineniy// Vestnik GulGU.-Gulistan, 2017. -№1. -S.111-115. 11. G.A.Tolstikov, L.A.Baltina, V.P.Grankina i dr. Solodka bioraznoobrazie, ximiya, primenenie v meditsine. Novosibirsk. “GEO”. 2007. 312 s. Download 1.88 Mb. Do'stlaringiz bilan baham: |
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