Optimization of instrumental parameters for square-wave anodic stripping voltammetry.
Experimental parameters associated with the use of a square-wave potential waveform during the stripping procedure have been examined for their effect on the sensitivity of ASV. Voltamperograms for 10-ng ml solutions of lead and of cadmium were recorded under the various experimental conditions. Peak heights obtained experimentally were compared with those calculated from an equation describing the rate of decay of the measured current. Calibration graphs were constructed for lead and cadmium over the range 0.1-1.6ng ml , and the two metals were determined in samples of the local water supply.
Buchanan
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Department of Chemistry, University of Iowa, Iowa City, IA 52242, U.S.A.
Soleta
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