Staircase Voltammetric Stripping Analysis at Thin Film Mercury Electrodes.
COLORADO STATE UNIV FORT COLLINS DEPT OF CHEMISTRY
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Anodic stripping voltammetry ASV is a powerful analytical tool for trace metal analysis. In this paper, an experimental study of the staircase ASV is presented. The various parameters governing the stripping current were studied and analytical applications for the determination of low level trace metals were demonstrated. Anodic stripping voltammetry from a rotating thin film mercury electrode has been carried out employing a staircase waveform. Experimental results are shown to be in excellent agreement with previously developed theory. The method is of the same order of sensitivity as differential pulse stripping, but is much faster to perform. Reproducibility is better than 1 on the same film and 5 on replated films at the 10 ppb level.
- Physical Chemistry