On the form of the single coulostatic decay curve |
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Authors: | Michael J Kelly Janet C Rühl Dennis H Evans |
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Institution: | (1) Department of Chemistry and Biochemistry, University of Delaware, 19716 Newark, DE, USA;(2) Present address: Sandia National Laboratories, 87185 Albuquerque, NM, USA |
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Abstract: | A plot of E/t
1/2 versusE as obtained from a single coulostatic decay curve resembles a classical voltammogram. Calculations by digital simulation show that for a reversible electrode reaction the coulostatic voltammogram is shifted to potentials slightly negative of the reversible half-wave potential. Analysis of published data for the reduction of aqueous Pb(II) at a mercury electrode shows that the results were affected by heterogeneous electron transfer kinetics. |
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Keywords: | coulostatic analysis electroanalysis microanalysis |
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