DISSOLUTION OF COLD ELECTRODES IN ALKALINE MEDIA CONTAINING CYSTEINE

EQCM results are reported for the voltammetric formation and reduction of surface oxide at a gold electrode in 0.10 M KOH containing cystein e. The data demonstrate that each cycle of oxide formation and subsequ ent oxide reduction results in loss of a small amount of Au from the e lectrode surface. This result has significance for applications of pul sed electrochemical detection of organic sulfur compounds in alkaline solutions following their separations by liquid chromatography.