Enhancement of sensitivity of coulometric detection usng a one-electrode system

K. Ikemoto, K. Kojima, F. Sassa, M. Yokokawa, H. Suzuki

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

Coulometric analysis is effective in the analysis of an analyte in a liquid plug of a very small volume. However, in the conventional coulometric detection, it took time to collect analyte molecules dissolved in the solution. To solve this problem, we used a novel method to achieve significant enhancement of sensitivity by using a one-electrode system. As a model analyte, hydrogen peroxide was oxidized in a flow channel and silver was deposited simultaneously on another electrode in another flow channel. Coulometric detection of the deposited silver showed a step change of generated charge. As a result, measurement time was reduced significantly (less than 2 s), although conventional methods took more than 60 s to achieve the same sensitivity. This shorter measurement time also suppressed the influence of background noise, resulting in significant lowering of the detection limit.

本文言語英語
ホスト出版物のタイトル2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11
ページ1962-1965
ページ数4
DOI
出版ステータス出版済み - 2011
外部発表はい
イベント2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11 - Beijing, 中国
継続期間: 6 5 20116 9 2011

出版物シリーズ

名前2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11

その他

その他2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11
Country中国
CityBeijing
Period6/5/116/9/11

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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