Interaction of Thiram with Glassy Carbon Electrode Surfaces under Applied Potentials Conditions

Degradation of thiram is greatly facilitated by potential application, where the major oxidation appears at +0.75 V at glassy carbon electrodes in the aqueous KCl medium. Effects of repetitive scans, the magnitude of the scan rate and the bulk concentration on the peak current of the major oxidation reaction of thiram suggest that both adsorption and diffusion be responsible for the electrochemical process. Investigation of the reactivity of simple model compounds, such as amines, carbon disulfide and thiourea, as compared to that of thiram, indicates that the main oxidation is associated with the thioamide functionality.