THE APPLICATION OF PRINCIPAL COMPONENT REGRESSION ON SIMULTANEOUS MULTICOMPONENT DETERMINATIONS THROUGH A SINGLE CATALYTIC KINETIC RUN

The kinetic behaviors of Cr(VI) and W(VI), which catalyze a common ind icator reaction between H2O2 and I-, were studied. A new concept, 'Rat e Spectrum', is proposed. The two catalysts can be determined simultan eously by analyzing the rate spectra of their mixtures as the rate spe ctra of each catalyst are linearly independent. Principal Component Re gression (PCR) was used to analyze the rate spectra of the mixtures of Cr and W, and in this way the two ions were determined simultaneously through a single kinetic run.