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Issue 36, 2016
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muciPRECON: multichannel preconcentrators for portable mid-infrared hydrocarbon gas sensors

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Abstract

Enrichment of vapor phase molecules is a crucial step during the detection of environmentally relevant trace gases suitable for detection via compact mid-infrared sensing devices. Methane is among the most abundant greenhouse gases in the troposphere, yet difficult to monitor given its rather low concentration levels. Consequently, for utilizing mobile and compact infrared sensors with limited absorption path lengths for detecting methane, appropriate preconcentration is a prerequisite. The present study introduces a multichannel substrate-integrated preconcentrator (muciPRECON) utilizing Carbosieve S-II/S-III adsorbent materials facilitating thermal desorption of enriched methane directly into a mid-infrared gas sensor based on substrate-integrated hollow waveguides (iHWGs) combined with a portable Fourier transform infrared (FT-IR) spectrometer suitable for in-field operation. With this novel approach, preconcentration factors (PCFs) up to 6.7 and a limit of detection (LOD) of 12 ppmv using Carbosieve S-II as the sorbent material were achieved.

Graphical abstract: muciPRECON: multichannel preconcentrators for portable mid-infrared hydrocarbon gas sensors

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Supplementary files

Article information


Submitted
20 May 2016
Accepted
02 Jul 2016
First published
07 Jul 2016

Anal. Methods, 2016,8, 6645-6650
Article type
Paper

muciPRECON: multichannel preconcentrators for portable mid-infrared hydrocarbon gas sensors

V. Kokoric, P. A. Wissel, A. Wilk and B. Mizaikoff, Anal. Methods, 2016, 8, 6645
DOI: 10.1039/C6AY01447J

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