Amperometric sensing system for the detection of urea by a combination of the pH-stat method and flow injection analysis

Kenji Yoneyama, Yusuke Fujino, Tetsuya Osaka, Ikuo Satoh*

*この研究の対応する著者

研究成果: Conference article査読

32 被引用数 (Scopus)

抄録

A new type of amperometric sensing system for urea was constructed based on combining the pH-stat method and the flow injection analysis (FIA) to solve the problem of potentiometry of dependency on the buffer concentration to the response of urea and moreover to eliminate the response to interfering substances. In the new system, the response to urea was independent of the buffer concentration and the relation between current response and urea concentration became linear. The possibility of automatic operation of this system with a potentiostatic feed back circuit was also confirmed. In this system, the relationship between urea concentration and current response was found to be linear up to 600 μM (=6.0 × 10-4 mol dm-3). Since the sample path was separated from the electrolysis path, no current response of interfering substances such as ascorbic acid and uric acid occurred at the physiological level. Thus, the possibility of amperometric sensing of urea which has a merit of no dependency on the buffer concentration and moreover no influence of interfering substances was demonstrated.

本文言語English
ページ(範囲)152-157
ページ数6
ジャーナルSensors and Actuators, B: Chemical
76
1-3
DOI
出版ステータスPublished - 2001 6 1
イベントProceeding of the 8th International Meeting on Chemical Sensors - Basel, Switzerland
継続期間: 2000 7 22000 7 5

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 器械工学
  • 凝縮系物理学
  • 表面、皮膜および薄膜
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学

フィンガープリント

「Amperometric sensing system for the detection of urea by a combination of the pH-stat method and flow injection analysis」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル