For citation:
Kapustina E. V., Burmistrova N. A., Mushtakova S. P. N-substituted arylamines in differential catalymetric determination of iridium (IV) and rhodium (III). Izvestiya of Saratov University. Chemistry. Biology. Ecology, 2005, vol. 5, iss. 1, pp. 67-69.
N-substituted arylamines in differential catalymetric determination of iridium (IV) and rhodium (III)
Kinetic of oxidation of N-methyldiphenylamine-4-sulfonic acid (MDASA) and triphenylamine-4-sulfonic acid (TPASA) by periodate ions in the weak-acidic medium is investigated at the presence of iridium (IV), rhodium (1) and their mixtures. The rate constants of MDASA and TPASA oxidation reactions by periodate ions at the presence of individual catalysts and their mixtures are determined. The range of concentration rations iridium (IV) : rhodium (11) is determined where sinergetic effect of concentration of one catalyst on the rate of oxidation MDASA and TPASA by periodate ions at the presence of another is not observed. Indicative oxidation reactions of MDASA and TPASA are applied to differential determination of iridium (IV) and rhodium (11) in artificial mixtures and a complex industrial sample by the method of the proportional equations,
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