Study of the Effects of Nonlinear Potential Sweeps on Voltammetry
2009 (English)In: Electroanalysis, ISSN 1040-0397, E-ISSN 1521-4109, Vol. 21, no 1, 68-76 p.Article in journal (Refereed) Published
Voltammetric methods use a constant sweep rate during the course of a scan. This paper reports a study of theinfluence of a nonconstant sweep rate on the voltammetric response. In this approach, either continuously increasingor continuously decreasing potential scan rates can be employed, unlike presently available methods which rely on aconstant sweep rate. The voltammetric response of potassium ferrocyanide at a glassy carbon electrode was used as amodel system to test the new method. The responses obtained using traditional staircase voltammetry (linear staircasevoltammetry) and the new approach (nonlinear staircase voltammetry) were compared by experiment and bysimulation. The new approach offers capability for signal enhancement, whereby enhanced current or enhanced peakshape can be obtained by choice of appropriate waveform parameters.
Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2009. Vol. 21, no 1, 68-76 p.
Voltammetry, Nonconstant scan rate, Nonlinear staircase voltammetry (NSCV), Simulation
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:liu:diva-92106DOI: 10.1002/elan.200804375OAI: oai:DiVA.org:liu-92106DiVA: diva2:620145