Development of a polyaniline-based optical ammonia sensor

被引：218

作者：

Jin, Z ^{[1
]}

Su, YX ^{[1
]}

Duan, YX ^{[1
]}

机构：

[1] Univ Calif Los Alamos Natl Lab, Chem Sci & Technol Div, Los Alamos, NM 87545 USA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2001年 / 72卷 / 01期

关键词：

optical sensor; polyaniline; ammonia;

D O I：

10.1016/S0925-4005(00)00636-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A polyaniline film was deposited on polyethylene surface by chemical oxidation of aniline monomer at room temperature. The ammonia gas sensing capabilities of the polyaniline film were studied using absorption spectroscopy method. A significant change was observed in the absorption spectra of the film after it was exposed to ammonia gas. The optical ammonia gas sensors have a response time of less than 15 s and a fast regeneration time of less than 2 min at room temperature. The sensors have a detection limit of 1 ppm (v/v) for ammonia. with a linear dynamic range from 180 to 18 000 ppm. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：75 / 79

页数：5

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