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

Tetsuya Osaka; Shinichi Komaba; Yusuke Fujino; Tomoka Matsuda; Ikuo Satoh

doi:10.1149/1.1391652

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

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

^*Corresponding author for this work

Research Organization for Nano & Life Innovation

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

25 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	615-619
Number of pages	5
Journal	Journal of the Electrochemical Society
Volume	146
Issue number	2
DOIs	https://doi.org/10.1149/1.1391652
Publication status	Published - 1999

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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10.1149/1.1391652

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abstract = "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.",

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AU - Osaka, Tetsuya

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AU - Fujino, Yusuke

AU - Matsuda, Tomoka

AU - Satoh, Ikuo

PY - 1999

Y1 - 1999

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AB - 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.

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

Abstract

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