%0 Journal Article
%T Multisensory Gas Chromatography for Field Analysis of Complex Gaseous Mixtures
%A Alexander Larin
%A Vladimir Dobrokhotov
%J ChemEngineering | An Open Access Journal from MDPI
%D 2019
%R https://doi.org/10.3390/chemengineering3010013
%X 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-Tex
%U https://www.mdpi.com/2305-7084/3/1/13