Electrochemical Response at Microarray Electrodes in Flowing Streams and Determination of Catecholamines

Atsushi Aoki, Tomokazu Matsue, Isamu Uchida

Research output: Contribution to journalArticle

84 Citations (Scopus)

Abstract

Electrochemical characterization of two microarray electrodes, an interdigltated microarray electrode (IDAE) and a single potential microarray electrode (SAE), was investigated in flowing streams. Amperometric responses at these electrodes were in good agreement with those of theoretical prediction. Compared to a dual-series rectangular electrode (DRE) with the same electrode area, the IDAE showed amplification of current responses by a factor of 2.8-3.9 due to redox cycling. The collection efficiency at IDAE was 0.6, which was higher than that at DRE 0.4. The application of IDAE to the selective determination of reversible species catecholamines in high-performance liquid chromatography was also demonstrated.

Original languageEnglish
Pages (from-to)2206-2210
Number of pages5
JournalAnalytical Chemistry
Volume62
Issue number20
DOIs
Publication statusPublished - 1990 Jan 15

ASJC Scopus subject areas

  • Analytical Chemistry

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