Triphenylamine-4-sulfonic acid in the catalymetric determination of platinum metals |
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| Authors: | P G Nikonorov N A Burmistrova S P Mushtakova |
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| Institution: | (1) Department of Chemistry, Chernyshevskii State University, Saratov, Astrakhanskaya ul. 83, Saratov, 410026, Russia |
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| Abstract: | The catalytic activity of Ir(IV), Rh(III), and Ru(IV) was studied in the reaction of the oxidation of triphenylamine-4-sulfonic acid by sodium periodate in a weakly acidic medium. The main analytical characteristics of triphenylamine-4-sulfonic acid were found out. The optimum conditions of the indicator reaction (concentrations of components, acidity, and temperature dependence) were selected. Procedures for determining Ir(IV), Rh(III), and Ru(IV) were proposed and tested with model mixtures. |
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