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Parallel comprehensive two-dimensional gas chromatography

Yan, D, Tedone, L ORCID: 0000-0002-5252-8865, Koutoulis, A ORCID: 0000-0001-8846-4456, Whittock, SP and Shellie, RA ORCID: 0000-0002-8470-0893 2017 , 'Parallel comprehensive two-dimensional gas chromatography' , Journal of Chromatography A, vol. 1524 , pp. 202-209 , doi: 10.1016/j.chroma.2017.09.063.

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Abstract

We introduce an information rich analytical approach called parallel comprehensive two-dimensional gas chromatography (2GC × 2GC). This parallel chromatography approach splits injected samples into two independent two-dimensional column ensembles and provides two GC × GC separations by using contra-directional thermal modulation. The first-dimension (1D) and second-dimension (2D) columns are connected using planar three-port microchannel devices, which are supplied with supplementary flow via two pressure controller modules. Precise carrier gas flow control at the junction of the 1D and 2D columns permits independent control of flow conditions in each separation column. The 2GC × 2GC approach provides two entirely independent GC × GC separations for each injection. Analysis of hop (Humulus lupulus L.) essential oils is used to demonstrate the capability of the approach. The analytical performance of each GC × GC separation in the 2GC × 2GC experimentis comparable to individual GC × GC separation with matching column configurations. The peak capacity of 2GC × 2GC is about 2 times than that of single GC × GC system. The dual 2D chromatograms produced by this single detector system provide complementary separations and additional identification information by harnessing different selectivity provided by the four separation columns.

Item Type: Article
Authors/Creators:Yan, D and Tedone, L and Koutoulis, A and Whittock, SP and Shellie, RA
Keywords: gas chromatography, comprehensive two-dimensional, 2GC × 2GC, GC × GC, flow control, contra-directional modulation
Journal or Publication Title: Journal of Chromatography A
Publisher: Elsevier Science Bv
ISSN: 0021-9673
DOI / ID Number: 10.1016/j.chroma.2017.09.063
Copyright Information:

Copyright 2017 Elsevier B.V.

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