Electrochemical behavior of parallel opposed dual electrode in a microchannel

Takeshi Ito, Kenichi Maruyama, Kazuharu Sobue, Seishiro Ohya, Osamu Niwa, Koji Suzuki

研究成果: Article査読

21 被引用数 (Scopus)

抄録

The electrochemical behavior dependent on the microchannel depth is discussed using a parallel opposed dual electrode in the microchip. The microchannel depth was controlled easily by the thickness of the photoresist. Cyclic voltammetry (CV) was carried out with conventional mode and the generation-collection mode. High collection efficiency (max: 98%) and high current amplification (max: 5.2) were achieved without miniaturizing the dual electrode by micromachining techniques, when the microchip with the microchannel depth of 30 μm was used in the generation-collection mode at low sweep rates. Quantitative analysis was applied to electrochemically reversible species with a quicker response time of around a few seconds for the same microchannel depth on chronoamperometry (CA). We observed good linearity on the calibration plot of dopamine (2 × 10-6 - ca. 1 × 10-3 mol dm-3).

本文言語English
ページ(範囲)2035-2041
ページ数7
ジャーナルElectroanalysis
16
24
DOI
出版ステータスPublished - 2004 12月

ASJC Scopus subject areas

  • 分析化学
  • 電気化学

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