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Multidimensional GC using planar microfluidic devices for the characterization of phenolic antioxidants in fuels
journal contribution
posted on 2013-09-01, 00:00 authored by J Luong, R Gras, H J Cortes, Robert ShellieRobert ShellieA multidimensional gas chromatographic approach using planar microfluidic devices for Deans switching has been developed and implemented for the characterization of sterically hindered phenolic compounds used as antioxidants in fuels. Detection and quantitation was conducted with MS in selected ion monitoring mode. A complete analysis is conducted in less than 15 min with precision greater than 5.5% at 1 and 25 ppm w/w (ppmw). LODs of 50 ppb w/w (ppbw) or better in selected ion monitoring mode and a linear range of 100 ppbw to 100 ppmw with a correlation coefficient greater than 0.998 were attained for all analytes. Unique to this analytical configuration is the use of a mass spectrometer capable of monitoring the column effluent from either dimension by incorporating a high-temperature rotary valve and a three-port planar microfluidic device. High-molecular-weight (C25-C40) fuel contaminants eluting from the first column can be selectively sent to the mass spectrometer for profile characterization in scan mode. These compounds would otherwise be retained substantially by the low-phase-ratio analytical column employed in the second dimension. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
History
Journal
Journal of Separation ScienceVolume
36Issue
17Pagination
2738 - 2745Publisher
WileyLocation
London, Eng.Publisher DOI
ISSN
1615-9306eISSN
1615-9314Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2013, WileyUsage metrics
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