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

Статья опубликована в высокорейтинговом журнале

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Дата последнего поиска статьи во внешних источниках: 22 апреля 2016 г.

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[1] Back-flushing and heart cut capillary gas chromatography using planar microfluidic deans' switching for the separation of benzene and alkylbenzenes in industrial samples / M. R. Jacobs, R. Gras, P. N. Nesterenko et al. // Journal of Chromatography A. — 2015. — Vol. 1421. — P. 123–128. Planar microfluidic devices coupled with modern electronic pressure control have allowed gas chro-matography (GC) practitioners to easily manipulate chromatographic systems to achieve heart cut andback-flushing configurations. These planar microfluidic devices have enhanced the connectivity betweendifferent components of GC instrumentation and have improved the inertness and minimised systemdead volumes compared to classical chromatographic unions and valves. In the present contributionthe setup and configuration of two multidimensional GC (MDGC) platforms is described for achievingthe separation and quantification of trace level target C6–C8alkylbenzenes in styrene monomer andIsoparaffinTMsolvents, using flame ionisation detection (FID). The performance of these MDGC platformsindicated 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−1for benzene in styrenemonomer, and 2.4–2.8 mg kg−1for C6–C8alkylbenzenes such as benzene, toluene, ethylbenzene and xylene in IsoparaffinTM solvent. [ DOI ]

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