Abstract
The adsorption of osmium(VIII) from sulfuric and hydrochloric acid solutions and gas phase on silicas chemically modified by dithiocarbamate, thiodiazolthiol, mercaptophenylpropylurea, and aminobenzothiazolpropyl groups is studied. A procedure is developed for the adsorption-photometric determination of osmium, including the adsorption of osmium(VIII) from the gas phase on silicas chemically modified by sulfur-containing groups and the determination of osmium in the adsorbent phase by diffuse reflection spectroscopy. The procedure was used to determine osmium in a certified reference material of the composition of a matte ore thermal melting and process waters.
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Original Russian Text © V.N. Losev, V.V. Parfenova, E.V. Elsuf’ev, A.K. Trofimchuk, 2015, published in Zhurnal Analiticheskoi Khimii, 2015, Vol. 70, No. 7, pp. 686–692.
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Losev, V.N., Parfenova, V.V., Elsuf’ev, E.V. et al. Preconcentration and determination of osmium(VIII) using silicas chemically modified with sulfur-containing groups. J Anal Chem 70, 781–787 (2015). https://doi.org/10.1134/S1061934815070072
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DOI: https://doi.org/10.1134/S1061934815070072