High Sensitivity Flow Injection Analysis of Urea Using Composite Electropolymerized Polypyrrole-Polyion Complex Film

Tetsuya Osaka*, Shinichi Komaba, Yusuke Fujino, Tomoka Matsuda, Ikuo Satoh

*この研究の対応する著者

研究成果: Article査読

25 被引用数 (Scopus)

抄録

A highly sensitive and rapid flow injection system for urea analysis was constructed with a composite film of electropolymerized inactive polypyrrole (PPy) and a polyion complex incorporating urease. This system shows a sensitivity of 120 mV decade-1 and a lifetime of more than 80 assays. The origin of the high sensitivity of this system is attributed to an additional potential response of inactive PPy to ammonia or ammonium ion superimposed on the response to pH change. By injecting a concentrated buffer solution immediately after the sample injection, this system is capable of assaying more than 15 samples per hour.

本文言語English
ページ(範囲)615-619
ページ数5
ジャーナルJournal of the Electrochemical Society
146
2
DOI
出版ステータスPublished - 1999

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

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