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Analysis of differential pulse polarography with multiple electrode reactions

Authors
Journal
Journal of Electroanalytical Chemistry
0022-0728
Publisher
Elsevier
Publication Date
Volume
183
Identifiers
DOI: 10.1016/0368-1874(85)85483-6
Disciplines
  • Chemistry

Abstract

Abstract A model has been developed to describe the combined effects of electrochemical kinetics, ohmic potential drop, and mass transfer for multiple electrochemical reactions at a dropping mercury electrode. The analysis is used to determine the influence of exchange current densities, standard electrode potentials, and operating conditions on the characteristics of differential pulse polarograms for a consecutive EE reaction mechanism. Criteria for the attainment of a separate peak for each reaction are presented. Also, conditions under which standard rate constant can be determined from peak potentials are identified. Results for a consecutive EE mechanism are compared with differential pulse polarograms for a single electrochemical reaction.

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