DISSOCIATIVE ADSORPTION OF THIOUREA AT A POLYCRYSTALLINE SILVER ELECTRODE IN ALKALINE MEDIA.

Thiourea has found widespread use in a variety of biological and industrial applications. There are many methods for the determination of thiourea and its derivatives. Cathodic stripping voltammetry at a silver electrode is a convenient analytical method. In this paper mechanisms of reactions proceeding during the deposition and dissolution steps at the cathodic stripping experiments are discussed. A typical cyclic voltammetric characteristic for a stationary polycrystalline silver electrode in 2 multiplied by 10** minus **4 mol/dm**3 thiourea solution at pH equals 12 is presented.