Cyclic Staircase Voltammetry

Document Type

Article

Language

eng

Format of Original

15 p.

Publication Date

6-10-1977

Publisher

Elsevier

Source Publication

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry

Source ISSN

0022-0728

Abstract

The use of cyclic staircase voltammetry was investigated in order to study kinetic mechanisms at low concentration levels. The reversible case for c.s.c.v. was studied along with two common kinetic cases: e.c. and catalytic mechanism. For both the e.c. and catalytic case, it was possible to correlate the peak current ratio with the rate constant with one working curve regardless of the step size, the step time or the time in the step in which the current was measured. For the catalytic mechanism, the increase in the peak current of the forward peak can also be correlated with the rate constant, once again regardless of the experimental parameters. Using this technique, high sensitivity can be obtained at low concentrations and fast scan rates as was shown by comparing c.s.c.v. with cyclic voltammetry for micromolar cadmium solutions. The use of staircase voltammetry for the study of the catalytic reaction between iron (III)-triethanolamine and hydroxylamine was demonstrated and a rate constant of 180 M−1 s−1 was obtained, which is consistent with previous work.

Comments

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, Vol. 79, No. 1 (June 10, 1977): 105-119. DOI.

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