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

Authors
Qin, SJ Wu, ZJ Tang, ZY Song, YL Zeng, FZ Zhao, D
Citation
Sj. Qin et al., The sensitivity to SO2 of the SAW gas sensor with triethanolamine modifiedwith boric acid, SENS ACTU-B, 66(1-3), 2000, pp. 240-242
Citations number
6
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
09254005 → ACNP
Volume
66
Issue
1-3
Year of publication
2000
Pages
240 - 242
Database
ISI
SICI code
0925-4005(20000725)66:1-3<240:TSTSOT>2.0.ZU;2-W
Abstract
The sensitivity to SO2 of the SAW gas sensor coated with triethanolamine (T EA) 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 fi lm compared with that of TEA film was observed. Both the steady response De lta f and the transient response (Delta f/Delta T)(max) varied linearly wit h 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 discuss ed. (C) 2000 Elsevier Science S.A. All rights reserved.