A colorimetric CO sensor for fire detection
| Autor: | Courbat Jerome Christian, D. Gutmacher, N. F. de Rooij, Danick Briand, K. Severin, Jürgen Wöllenstein, Ulrich Hoefer, M. Pascu |
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| Rok vydání: | 2011 |
| Předmět: |
medicine.diagnostic_test
Colorimetric Optical waveguide Fire detection Analytical chemistry chemistry.chemical_element General Medicine Color dye Rhodium Glass waveguide Matrix (chemical analysis) chemistry.chemical_compound chemistry Spectrophotometry Reagent medicine Carbon monoxide Volume concentration Engineering(all) |
| Zdroj: | Procedia Engineering. 25:1329-1332 |
| ISSN: | 1877-7058 |
| DOI: | 10.1016/j.proeng.2011.12.328 |
| Popis: | We report on a colorimetric carbon monoxide (CO) sensor based on a rhodium complex. The sensor relies on changes in the light absorption properties of the chemochromic reagent when exposed to the gas. Its optical properties in solution and in a polymeric matrix were investigated by spectrophotometry. A strong color change from purple to yellow was obtained when exposed to CO. For its implementation in a sensor configuration, the complex embedded in a PVC-based matrix was spin-coated onto a glass waveguide. The sensor was tested in a gas cell and with standardized test fires. It showed a high sensitivity to low concentrations of CO, a fast reaction time and complete reversibility. The device may find applications in the field of fire detection and indoor air quality monitoring. (C) 2011 Published by Elsevier Ltd. |
| Databáze: | OpenAIRE |
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