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Characterisation of lavender essential oils by using gas chromatography-mass spectrometry with correlation of linear retention indices and comparison with comprehensive two-dimensional gas chromatography

journal contribution
posted on 2002-09-13, 00:00 authored by Robert Shellie, L Mondello, P Marriott, G Dugo
Nine samples of lavender essential oil were analysed by GC-MS using low-polarity and polar capillary columns. Linear retention indices (LRI) were calculated for each component detected. Characterisation of the individual components making up the oils was performed with the use of an mass spectrometry (MS) library developed in-house. The MS library was designed to incorporate the chromatographic data in the form of linear retention indices. The MS search routine used linear retention indices as a post-search filter and identification of the "unknowns" was made more reliable as this approach provided two independent parameters on which the identification was based. Around 70% of the total number of components in each sample were reliably characterised. A total of 85 components were identified. Semi-quantitative analysis of the same nine samples was performed by gas chromatography (GC) with flame ionisation detection (FID). The identified components accounted for more than 95% of each oil. By comparing the GC-MS results with the results from the GC×GC-FID analysis of a lavender essential oil, many more components could be found within the two-dimensional separation space. © 2002 Elsevier Science B.V. All rights reserved.

History

Journal

Journal of chromatography a

Volume

970

Issue

1-2

Pagination

225 - 234

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0021-9673

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2002, Elsevier Science B.V.