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Comprehensive two-dimensional gas chromatography with fast enantioseparation
journal contribution
posted on 2002-09-01, 00:00 authored by Robert ShellieRobert Shellie, P J MarriottThe development of fast chiral analysis for use in comprehensive two-dimensional gas chromatography in which a short second dimension enantioselective capillary column provides a route to precise measurement of chiral ratios of enantiomers is described. Retention times as short as 8 s are reported for (±)-limonene, with adequate enantioseparation maintained (Rs ∼ 1.0) on a 1-m cyclodextrin derivative-coated capillary column. Sufficiently fast elution on the second column was achieved by using GC/MS in which the subambient pressure (vacuum outlet) conditions promote increased diffusion coefficients and higher component volatility; a 4-fold reduction of second-dimension retention time was observed, as compared with ambient pressure outlet conditions. The enantiomeric distribution of several monoterpene compounds in bergamot essential oil is reported as a demonstration of the method. Total analysis time of the target components was ∼8.5 min.
History
Journal
Analytical chemistryVolume
74Issue
20Pagination
5426 - 5430Publisher
ACS PublicationsLocation
Washington, D.C.Publisher DOI
ISSN
0003-2700Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2002, American Chemical SocietyUsage metrics
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