The sensitivity to SO2 of the SAW gas sensor with triethanolamine modified with boric acid
| Autor: | Dong Zhao, Zhongjie Wu, Fanzhong Zeng, Shuji Qin, Yilin Song, Zhongyue Tang |
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| Rok vydání: | 2000 |
| Předmět: |
Reproducibility
Mole ratio Chemistry Metals and Alloys Analytical chemistry Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Boric acid chemistry.chemical_compound Triethanolamine Materials Chemistry medicine Transient response Electrical and Electronic Engineering Instrumentation Sensitivity (electronics) medicine.drug |
| Zdroj: | Sensors and Actuators B: Chemical. 66:240-242 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/s0925-4005(00)00361-0 |
| Popis: | The sensitivity to SO 2 of the SAW gas sensor coated with triethanolamine (TEA) modified with boric acid (H 3 BO 3 ) (TEA and H 3 BO 3 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 Δ f and the transient response (Δ f /Δ t ) max varied linearly with the concentration of SO 2 (0.5–8 ppm). Suitable sensitivity, fast response, good recovery, and reproducibility were found for the SAW SO 2 sensor. The effect of H 3 BO 3 on the sensitivity to SO 2 of the SAW gas sensor is discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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