Generalized method for simultaneous multicomponent determinations through a single catalytic kinetic run by using the rate spectrum

Abstract

The possibility of the simultaneous determination of two catalysts through a single catalytic kinetic run by using the ‘rate spectrum’ is discussed. The reaction between IO₄^– and As^III catalysed by Os^VIII and Cr^III is used as an example. The change in the concentration of IO₄^– with time is measured with a ClO₄^–-selective electrode. Owing to the conspicuous difference in the rate spectra of the Os^VIII- and Cr^III-catalysed reactions, the simultaneous determination of the two catalysts is possible. Principal component regression can be used to solve the rate spectra of binary mixtures.