Validation and Optimization of an In-situ Copper-Modified Glassy Carbon Electrode

Square wave anodic stripping voltammetry (SWASV) technique is one of the most used electrochemical techniques in the determination of the trace amounts of heavy metals in different environments. This is due among other reasons to the fact that this method offers low detection limit, high selectivity and precision at relatively low cost. Modified film electrodes have been found as good replacement to the mercury electrodes. In this work different deposition potentials have been used to optimize an in situ-prepared copper-film glassy carbon electrode (CuFE). In addition, a preliminary study using electrochemical impedance spectroscopy (EIS) was performed to investigate the characteristics of the CuFE sensor.