Controlling the diffusion profile of electroactive species for selective anodic stripping voltammetry of cadmium at boron-doped diamond electrodes

Ai Sugitani, Takeshi Watanabe, Tribidasari A. Ivandini, Tatsuo Iguchi, Yasuaki Einaga

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Selective anodic stripping voltammetry of trace metal ions in a mixture solution with another interfering metal was developed based on Fick's law concerning the diffusion profile of interfering metals at the electrode surface after electrolysis treatment. A boron-doped diamond film was used as the sensing electrode, while a perforated carbon sheet was used for the interference-depleting electrode. The influence of the electrode distance and the time of electrolysis on the formation of the diffusion profile was studied. As a working model, the detection of cadmium with copper interference was investigated. The advantage of the method in comparison to general electrolysis was also discussed. The method offers a new perspective for improving the selective detection of metal ions by analyzing the diffusion profiles of the interfering species at the surface of electrodes.

Original languageEnglish
Pages (from-to)142-147
Number of pages6
JournalPhysical Chemistry Chemical Physics
Volume15
Issue number1
DOIs
Publication statusPublished - 2013 Jan 7

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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