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Spectrophotometric determination of osmium with the use of 3-methyl-2,6-dimercapto-1,4-thiopyrone in concentrates and alloys

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Abstract

Taking into account the specific features of the complexation of osmium(VI) and osmium(IV) with 3-methyl-2,6-dimercapto-1,4-thiopyrone without a change in the oxidation number of the given element and properties of complexes formed in aqueous and organic solutions, schemes were proposed for the instrumental (including spectrophotometric) determination of osmium with the preconcentration and separation from concomitant components without distillation of its tetroxide from technological solutions or solutions of an alkalioxidizing sample decomposition. A procedure was proposed for the direct spectrophotometric determination of osmium(VI) in solutions; the accuracy of the procedure was verified with a standard reference sample of a platinum concentrate. The developed procedure was used for the determination of osmium in the flotation slime of ores from Dzhezkazgan deposits and in alloys.

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Authors and Affiliations

  1. Department of Chemistry, Dnepropetrovsk National University, Nauchnyi per. 13, Dnepropetrovsk, 49050, Ukraine

    F. A. Chmilenko & S. N. Khudyakova

Authors
  1. F. A. Chmilenko
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  2. S. N. Khudyakova
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Original Russian Text © F.A. Chmilenko, S.N. Khudyakova, 2008, published in Zhurnal Analiticheskoi Khimii, 2008, Vol. 63, No. 5, pp. 483–489.

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Chmilenko, F.A., Khudyakova, S.N. Spectrophotometric determination of osmium with the use of 3-methyl-2,6-dimercapto-1,4-thiopyrone in concentrates and alloys. J Anal Chem 63, 439–445 (2008). https://doi.org/10.1134/S1061934808050067

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  • DOI: https://doi.org/10.1134/S1061934808050067

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