Photometric Determination of Tin in Caspian Sea Water
- 36 Downloads
- 1 Citations
Abstract
Procedures were developed for the photometric determination of tin(II) with pyrogallol azo compounds, 2,3,4-trihydroxyphenylazo-5′-sulfonaphthalene (R1) and 2,2′,3,4-tetrahydroxy-3′-sulfo-5′-chlorazobenzene (R2), in the presence of triphenylguanidine and bathophenantroline. The complexation of tin(II) with R1 and R2 was studied. It was found that different-ligand complexes formed in the presence of hydrophobic amines. A bathochromic shift in absorption spectra was observed along with shifts of optimum pH formation. The effect of reagent concentration, time, and temperature on the formation of different-ligand complexes was studied, and their stoichiometry was determined by different methods. It was shown that the determination of tin(II) with R2 in the presence of the third component is highly selective. The developed procedures were used for the photometric determination of tin in Caspian Sea water.
Keywords
Analytical Chemistry Absorption Spectrum Pyrogallol Bathochromic Shift Reagent ConcentrationPreview
Unable to display preview. Download preview PDF.
REFERENCES
- 1.Rukovodstvo po metodam khimicheskogo analiza morskikh vod (Handbook on Methods for the Chemical Analysis of Sea Waters), Oradovskii, S.G., Ed., Leningrad: Gidrometeoizdat, 1977.Google Scholar
- 2.Karyakin, A.V. and Gribovskaya, I.F., Metody opticheskoi spektroskopii i lyuminestsentsii v analize prirodnykh i stochnykh vod (Methods of Optical Spectroscopy in the Analysis of Natural and Waste Waters), Moscow: Khimiya, 1987.Google Scholar
- 3.Uvarova, K.A. and Marova, S.F., Zh. Anal. Khim., 1995, vol. 50, no.11, p. 1141.Google Scholar
- 4.Yaroshenko, O.P., Gavrilova, V.N., and Sumskaya, N.R., Zavod. Lab., 1992, vol. 58, no.8, p. 11.Google Scholar
- 5.Spivakovskii, V.B., Analiticheskaya khimiya olova (Analytical Chemistry of Tin), Moscow: Nauka, 1975.Google Scholar
- 6.Chmilenko, F.A., Zhuk, L.P., Chmilenko, T.S., and Kharun, M.V., Zh. Anal. Khim., 2000, vol. 55, no.2, p. 166 [J. Anal. Chem. (Engl. Transl.), vol. 55, no. 2, p. 146].Google Scholar
- 7.Korostelev, P.P., Prigotovlenie rastvorov dlya khimiko-analiticheskikh rabot (Preparation of Solutions for Analytical Works), Moscow: Nauka, 1964.Google Scholar
- 8.Bulatov, M.T. and Kaminkin, I.P., Prakticheskoe rukovodstvo po fotokolorimetricheskim i spektrofotometricheskim metodam analiza (Practical Guide on Photocolorimetric and Spectrophotometric Methods of Analysis), Leningrad: Khimiya, 1986.Google Scholar
- 9.Astakhov, K.V., Verinikin, V.B., Zimin, V.I., and Zver’kova, A.D., Zh. Neorg. Khim., 1961, vol. 6, p. 2069.Google Scholar