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Proceedings Paper

Detection of toxic gases using cermet sensors
Author(s): Laura R. Skubal; Michael C. Vogt
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Paper Abstract

New technologies are needed for detection and identification of gaseous species in near-real time. Voltammetry, applied to cermet electrochemical cell microsensors, was shown in this study to be promising in its ability to discern and quantify gases. The miniature cermet cells were fabricated from ceramic, metallic, and metal oxide components, and reacted uniquely with gases and mixtures in the atmosphere. Neural net chemometrics algorithms were used to interpret the waveforms to extract information about the presence and concentration of constituent gases. Results to date have shown that these sensors can correctly identify more than thirty electroactive gases while showing a high tolerance for interferents. A single element sensor can determine gas concentrations from the part per million level to the percentage level while arrays provide even better detection and discrimination. This work focuses on four constituents of diesel exhaust: benzene, 1,3-butadiene, acrolein, and acetaldehyde. Voltammetric sensors demonstrated reproducible responses to four concentrations of each constituent spiked into diesel exhaust.

Paper Details

Date Published: 7 December 2004
PDF: 9 pages
Proc. SPIE 5586, Advanced Environmental, Chemical, and Biological Sensing Technologies II, (7 December 2004); doi: 10.1117/12.570029
Show Author Affiliations
Laura R. Skubal, Argonne National Lab. (United States)
Michael C. Vogt, Argonne National Lab. (United States)


Published in SPIE Proceedings Vol. 5586:
Advanced Environmental, Chemical, and Biological Sensing Technologies II
Tuan Vo-Dinh; Gunter Gauglitz; Robert A. Lieberman, Editor(s)

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