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High-performance gas sensing of CO: comparative tests for semiconducting (SnO2-based) and for amperometric gas sensors
- Source :
- Analytical Chemistry. July 1, 1999, Vol. 71 Issue 13, p2512, 6 p.
- Publication Year :
- 1999
-
Abstract
- A comparison of the stability and sensitivity for two different sensor types (semiconductor Sn[O.sub.2] devices, amperometric electrochemical sensors) has been performed. Sensitivities and drifts in the signal and in the background for various concentrations of CO have been studied for thick-film Sn[O.sub.2] sensors (Pt and Pd doped) for a period in excess of 8 months. Similar performance data have been recorded for commercial amperometric sensors for a period in excess of 4 years. The two different sensor types investigated here were also compared to the well-known commercial Figaro TGS 822 sensor at similar concentrations. An objective approach for comparing different types of sensors has been developed using the 'analytical sensitivity'.
Details
- ISSN :
- 00032700
- Volume :
- 71
- Issue :
- 13
- Database :
- Gale General OneFile
- Journal :
- Analytical Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.55267739