STEPPED-POTENTIAL VOLTAMMETRIES AT STATIONARY ELECTRODES .1. DIFFERENTIAL STAIRCASE, DIFFERENTIAL-PULSE AND SQUARE-WAVE VOLTAMMETRIES

Citation
D. Krulic et al., STEPPED-POTENTIAL VOLTAMMETRIES AT STATIONARY ELECTRODES .1. DIFFERENTIAL STAIRCASE, DIFFERENTIAL-PULSE AND SQUARE-WAVE VOLTAMMETRIES, Journal of electroanalytical chemistry [1992], 385(1), 1995, pp. 33-38
Citations number
17
Categorie Soggetti
Electrochemistry,"Chemistry Analytical
Journal title
Journal of electroanalytical chemistry [1992]
ISSN journal
15726657 → ACNP
Volume
385
Issue
1
Year of publication
1995
Pages
33 - 38
Database
ISI
SICI code
Abstract
Differential pulse voltammetry (DPV) and related techniques are examin ed. The proposed treatment is valid for any pulse method performed at stationary plane or spherical electrodes in the case of simple reversi ble reactions with both redox forms soluble in solution. The behaviour of the waves in DPV depends on the ratio R of the duration of the imp ulses to the duration of the steps of the potential staircase on which the impulses, of amplitude \Delta E\, are added. The waves behave as in differential pulse polarography performed at a renewable mercury dr op electrode only if R > 0.8. Square-wave voltammetry, where R = 0.5, and differential staircase voltammetry, where Delta E = 0, appear as p articular cases of the DPV. All these methods can be analysed satisfac torily in a simple way.