Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1200, Issue 1, Pages 28-33Publisher
ELSEVIER
DOI: 10.1016/j.chroma.2008.03.069
Keywords
essential oil; fast gas chromatography; mass spectrometry; low-pressure gas chromatography
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Analysis of parsley and fennel essential oils was performed by using low-pressure gas chromatography-mass spectrometry (GC-MS). The low-pressure instrument configuration was achieved by fitting a GC-MS instrument with a 530 mu m I.D. capillary column and an appropriate capillary restrictor at the inlet of the column. Comparison of the performance of the low-pressure GC-MS setup was made with fast GC-MS using a narrow-bore capillary column. By comparing the two approaches side-by-side the benefits of low-pressure GC-MS for characterisation of moderately complex essential oils comprising less than 50 detectable components can be fully appreciated. Although efficiency is sacrificed, the improved sample capacity of the 530 mu m, I.D. column leads to higher peak intensities and in-turn better mass spectral library matching thus providing highly satisfactory results. (c) 2008 Elsevier B.V. All rights reserved.
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