Liquid-junction-free system for substitutional stripping voltammetry using a closed bipolar electrode system

Shinichiro Takano, Kumi Y. Inoue, Miho Ikegawa, Yasufumi Takahashi, Kosuke Ino, Hitoshi Shiku, Tomokazu Matsue

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A liquid-junction-free electrochemical system has been developed for substitutional stripping voltammetry (SSV). SSV is a type of stripping analysis that changes the redox current to metal deposition. Generally, SSV requires a liquid junction to maintain electrical conductivity between separated cells. In this report, a closed bipolar electrode system (cBPES) was used to perform SSV without a liquid junction. In this system, electrical conductivity between separated cells was maintained using driving electrodes inserted into each cell. We demonstrated quantification of p-aminophenol (pAP) using a liquid-junction-free system for SSV. We investigated the effect of electrode area ratio on the BPE and the concentration ratio of redox species present in each cell. Then, we calibrated the pAP. A linear relationship between pAP concentration and SSV electrical charge was successfully obtained using our liquid-junction-free system, based on cBPES. This novel analytical system is a promising method for the fabrication of a compact SSV sensor for highly sensitive detections.

Original languageEnglish
Pages (from-to)34-37
Number of pages4
JournalElectrochemistry Communications
Volume66
DOIs
Publication statusPublished - 2016 May 1

Keywords

  • Closed bipolar system
  • Electrochemical detection
  • Substitutional stripping voltammetry

ASJC Scopus subject areas

  • Electrochemistry

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