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Authors:
Rolf Seifert
Thorsten Conrad
Jens Peter
Hubert Keller
Keywords: alcohol control; mobile sensor system; thermo-cyclic operation; data analysis; substance identification; concentration determination
Abstract:
An innovative mobile sensor system for breath control in the exhaled air is introduced. In this paper, the application of alcohol control in the exhaled air is considered. This sensor system operates semiconducting gas sensor elements with respect to the application in a thermo-cyclic operation mode. This operation mode leads to so-called conductance-over-time-profiles (CTPs), which are fingerprints of the gas mixture under consideration and can be used for substance identification and concentration determination. Especially for the alcohol control in the exhaled air, ethanol is the leading gas component to be investigated. But, there are also other interfering gas components in the exhaled air, like H2 and acetone, which may influence the measurement results. Therefore, a ternary ethanol-H2-acetone gas mixture was investigated. The establishing of the mathematical calibration model and the data analysis was performed with a newly developed innovative calibration and evaluation procedure called ProSens 3.0. The analysis of ternary ethanol-H2-acetone gas samples with ProSens 3.0 shows a very good substance identification performance and a very good concentration determination of the leading ethanol component. The relative analysis errors for the leading component ethanol were in all considered samples less than 9%.
Pages: 109 to 114
Copyright: Copyright (c) IARIA, 2017
Publication date: September 10, 2017
Published in: conference
ISSN: 2308-3514
ISBN: 978-1-61208-581-4
Location: Rome, Italy
Dates: from September 10, 2017 to September 14, 2017