The sensitivity to SO2 of the SAW gas sensor with triethanolamine modified with boric acid

被引：18

作者：

Qin, SJ ^{[1
]}

Wu, ZJ

Tang, ZY

Song, YL

Zeng, FZ

Zhao, D

机构：

[1] Tongji Univ, Dept Phys, Shanghai 200092, Peoples R China

[2] China Acad Engn Phys, Inst Mat & Technol, Chengdu 610007, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2000年 / 66卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

sensitivity to SO2; SAW gas sensor; TEA with H3BO3;

D O I：

10.1016/S0925-4005(00)00361-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The sensitivity to SO2 of the SAW gas sensor coated with triethanolamine (TEA) modified with boric acid (H3BO3) (TEA and H3BO3 were mixed with a mole ratio 3:1) has been investigated. A better stability of the modified TEA film compared with that of TEA film was observed. Both the steady response Delta f and the transient response (Delta f/Delta T)(max) varied linearly with the concentration of SO, (0.5-8 ppm). Suitable sensitivity, fast response, good recovery, and reproducibility were found for the SAW SO2 sensor. The effect of H3BO3 on the sensitivity to SO2 of the SAW gas sensor is discussed. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：240 / 242

页数：3