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Multisensory Gas Chromatography for Field Analysis of Complex Gaseous Mixtures

Applied Physics Institute, Western Kentucky University, Bowling Green, KY 42101, USA
VAON LLC, Bowling Green, KY 42101, USA
Author to whom correspondence should be addressed.
ChemEngineering 2019, 3(1), 13;
Received: 5 December 2018 / Revised: 25 January 2019 / Accepted: 28 January 2019 / Published: 2 February 2019
(This article belongs to the Special Issue TiO2 Nanoparticles: Synthesis and Applications)
PDF [10263 KB, uploaded 2 February 2019]


A novel approach to analysis of complex gaseous mixtures is presented. The approach is based on the utilization of a compact gas chromatograph in combination with an array of highly integrated and selective metal oxide (MOX) sensors. Thanks to the implementation of a multisensory detector, the device collects multiple chromatograms in a single run. The sensors in the integrated MEMS platform are very distinct in their catalytic properties. Hence, the time separation by chromatographic column is complemented by catalytic separation by a multisensory detector. Furthermore, the device can perform the analysis in a broad range of concentrations, from ppb to hundreds of ppm. Low ppb and even sub-ppb levels of detection for some analytes were achieved. As a part of this effort, nanocomposite gas sensors were synthesized for selective detection of hydrogen sulfide, mercaptans, alcohols, ketones, and heavy hydrocarbons. View Full-Text
Keywords: integrated sensors; portable gas chromatography; hydrocarbons integrated sensors; portable gas chromatography; hydrocarbons

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Dobrokhotov, V.; Larin, A. Multisensory Gas Chromatography for Field Analysis of Complex Gaseous Mixtures. ChemEngineering 2019, 3, 13.

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