THEORY OF SQUARE-WAVE STRIPPING VOLTAMMETRY AND CHRONOAMPEROMETRY OF IMMOBILIZED REACTANTS

Square-wave stripping voltammograms of redox reactions which involve immobilized reactants and dissolved products are analysed theoretically. The model applies to anodic or cathodic stripping of the material accumulated at an electrode surface by electrodeposition, abrasion, adsorption or the formation of a thin amalgam film. Reversible, quasi-reversible and totally irreversible reactions are considered. The origin of the so-called "quasi-reversible maximum", which could be used for electrode kinetic measurements, is explained using a study of the chronoamperometric properties of these reactions.