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

Atsushi Aoki; Tomokazu Matsue; Isamu Uchida

doi:10.1021/ac00219a010

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

Atsushi Aoki, Tomokazu Matsue, Isamu Uchida

Promotion Center of Strategic Innovation

Tohoku University

Research output: Contribution to journal › Article › peer-review

91 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 language	English
Pages (from-to)	2206-2210
Number of pages	5
Journal	Analytical Chemistry
Volume	62
Issue number	20
DOIs	https://doi.org/10.1021/ac00219a010
Publication status	Published - 1990 Jan 15

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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.",

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

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