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Metal 3D-printed catalytic jet and flame ionization detection for in situ trace carbon oxides analysis by gas chromatography

Gras, R, Hua, Y, Luong, J, Qiao, P, Yang, XG and Yang, P 2019 , 'Metal 3D-printed catalytic jet and flame ionization detection for in situ trace carbon oxides analysis by gas chromatography' , Journal of Separation Science, vol. 42, no. 17 , pp. 2826-2834 , doi: 10.1002/jssc.201900214.

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A gas chromatographic approach for the determination and quantification of trace levels of carbon oxides in gas phase matrices for in situ or near-line/at-line analysis has been successfully developed. Catalytic conversion of the target compounds to methane via the methanation process was conducted inside a metal 3D-printed jet that also acted as a hydrogen burner for the flame ionization detector. Modifications made to a field transportable gas chromatograph enabled the leveraging of advantaged microfluidic-enhanced chromatography capability for improved chromatographic performance and serviceability. The compatibility with adsorption chromatography technology was demonstrated with in-house constructed columns. Sustained reliable conversion efficiencies of greater than 99% with respectable peak symmetries were attained at 400°C. Quantification of carbon monoxide and carbon dioxide at a parts-per-million level over a range from 0.2 ppm to 5% v/v for both compounds with a respectable precision of less than 3% relative standard deviation for peak area (n = 10) and a detection limit of 0.1 ppm v/v was achieved. Linearity with correlation coefficients of R2 greater than 0.9995 and measured recoveries of >99% for spike tests were achieved. The 3D-printed steel jet was found to be reliable and resilient against potential contamination from the matrices owing to the in situ backflushing capability.

Item Type: Article
Authors/Creators:Gras, R and Hua, Y and Luong, J and Qiao, P and Yang, XG and Yang, P
Keywords: carbon dioxide, carbon monoxide, flame ionization detection, gas chromatography, jetanizer
Journal or Publication Title: Journal of Separation Science
Publisher: Wiley
ISSN: 1615-9306
DOI / ID Number: 10.1002/jssc.201900214
Copyright Information:

Copyright 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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