Stripping chronopotentiometric scanned deposition potential (SSCP). Part 1. Fundamental features

H.P. van Leeuwen, R.M. Town

Research output: Contribution to journalArticleAcademicpeer-review

71 Citations (Scopus)

Abstract

A rigorous theory for the shape and characteristics of (deposition potential) scanned stripping chronopotentiometry (SSCP) curves is presented. Their fundamental features are investigated and compared with those of dc polarograms. An equation is derived that fully describes the relationship between stripping time, ¿, and deposition potential, Ed, in the complete depletion regime at both a conventional HMDE and a microelectrode. This equation is explicit in the analytical signal, ¿, and shows that for a reversible system the ¿, Ed waveform is basically different from the conventional polarogram. Specifically, it is distinctly steeper and does not conform to a linear log-plot. Still, the shift in half-wave potential in the presence of complexing agents, as well as the effect of a reduced diffusion coefficient for the metal complex species, can be interpreted straightforwardly, analogous to the DeFord¿Hume expression for a polarographic wave.
Original languageEnglish
Pages (from-to)129-140
JournalJournal of Electroanalytical Chemistry
Volume536
Issue number1-2
DOIs
Publication statusPublished - 2002

Keywords

  • association dissociation kinetics
  • metal-complex systems
  • different diffusion-coefficients
  • voltammetry
  • lability

Fingerprint

Dive into the research topics of 'Stripping chronopotentiometric scanned deposition potential (SSCP). Part 1. Fundamental features'. Together they form a unique fingerprint.

Cite this