Selective detection of As(V) with high sensitivity by as-deposited boron-doped diamond electrodes

Yasutaka Nagaoka, Tribidasari A. Ivandini, Daisuke Yamada, Shinoka Fujita, Mikito Yamanuki, Yasuaki Einaga

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Electrochemical selective detection of not only As(III) but also As(V) has been investigated by anodic stripping voltammetry. Here, instead of using modified working electrodes, simple as-deposited boron-doped diamond (BDD) electrodes were used with the addition of gold ions in the sample solution as a catalyst for the electrochemical reaction. A potential-step technique was performed to minimize the hydrogen evolution effect that occurs at the highly negative potential such as -1.5 V (vs. Ag/AgCl) for the reduction of As(V). The present method realized very high sensitivity with an experimental detection limit of 12ppb and excellent stability for the detection of both As(III) and As(V) as well as mixed solutions of these forms.

Original languageEnglish
Pages (from-to)1055-1057
Number of pages3
JournalChemistry Letters
Volume39
Issue number10
DOIs
Publication statusPublished - 2010 Sep 24

ASJC Scopus subject areas

  • Chemistry(all)

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