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Multisensory Gas Chromatography for Field Analysis of Complex Gaseous Mixtures

1
Applied Physics Institute, Western Kentucky University, Bowling Green, KY 42101, USA
2
VAON LLC, Bowling Green, KY 42101, USA
*
Author to whom correspondence should be addressed.
ChemEngineering 2019, 3(1), 13; https://doi.org/10.3390/chemengineering3010013
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)
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Abstract

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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