Abstract

A model of pulse polarograms influenced by anion induced adsorption of metal complexes is developed. The dependence of peak potentials on the logarithm of the ligand concentration is a curve with a flat segment, the slope of which depends on both the number of ligands in a dissolved surface-active complex and the relationship between the surface concentration of the adsorbed ligand and its bulk concentration. This slope can indicate the composition of the adsorbed complex. Some results obtained with lead(II) and cadmium(II) in bromide and iodide media are reported.

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