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Back-flushing and heart cut capillary gas chromatography using planar microfluidic Deans' switching for the separation of benzene and alkylbenzenes in industrial samples

journal contribution
posted on 2015-11-20, 00:00 authored by Matthew R Jacobs, Ronda Gras, Pavel N Nesterenko, Jim Luong, Robert ShellieRobert Shellie
Planar microfluidic devices coupled with modern electronic pressure control have allowed gas chromatography (GC) practitioners to easily manipulate chromatographic systems to achieve heart cut and back-flushing configurations. These planar microfluidic devices have enhanced the connectivity between different components of GC instrumentation and have improved the inertness and minimised system dead volumes compared to classical chromatographic unions and valves. In the present contribution the setup and configuration of two multidimensional GC (MDGC) platforms is described for achieving the separation and quantification of trace level target C6-C8 alkylbenzenes in styrene monomer and Isoparaffin™ solvents, using flame ionisation detection (FID). The performance of these MDGC platforms indicated excellent retention time (0.2% relative standard deviation, RSD) and peak area repeatability (1% RSD) for all analytes of interest. The limit of detection (LOD) was 0.8 mg kg(-1) for benzene in styrene monomer, and 2.4-2.8 mg kg(-1) for C6-C8 alkylbenzenes such as benzene, toluene, ethylbenzene and xylene in Isoparaffin™ solvent.

History

Journal

Journal of Chromatography A

Volume

1421

Pagination

123-128

Location

Amsterdam, The Netherlands

ISSN

0021-9673

eISSN

1873-3778

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2015, Elsevier

Publisher

Elsevier

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