“…Continuing our previous investigations on transitionmetal oxide -carbon powder epoxy composite electrodes [5] in the present paper we examine the electrochemical and electrocatalytical behavior of copper oxide modified carbon powder epoxy composite electrodes. Copper-based catalysts represent an interesting class and have proved to be electrocatalytic active for biosensing of glucose and carbohydrates [6], saccharides, alditols, amino acids, alcohols, and amines [7], organic compounds [8], volatile organic compounds [9], cyanides [10] and nitrites [11], owing to the excellent electrocatalytic activity of copper oxide towards the oxidation/reduction of these analytes.…”