Retention divergence of terpenes with porous graphitized carbon and C18 stationary phases

Stevenson, Paul G. and Guiochon, Georges 2012, Retention divergence of terpenes with porous graphitized carbon and C18 stationary phases, Journal of chromatography A, vol. 1247, pp. 57-62.

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Title Retention divergence of terpenes with porous graphitized carbon and C18 stationary phases
Author(s) Stevenson, Paul G.
Guiochon, Georges
Journal name Journal of chromatography A
Volume number 1247
Start page 57
End page 62
Total pages 6
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2012-07-20
ISSN 0021-9673
Keyword(s) terpenes
porous graphitized carbon
2D-HPLC
selectivity
GAFA
Summary The significant divergence between the retention of 16 terpene standards on porous graphitized carbon (PGC) and C18 packing materials are illustrated. The PGC surface is shown to provide a selectivity toward shape, polarity, and structure that is not afforded by the C18 surface. This observation is illustrated by plots of the retention factors similar to those typically used to represent 2D-HPLC separations. A geometric approach to factor analysis was used to measure the separation divergence together with the selectivity and the product selectivity factors of closely related species. When a methanol mobile phase was used with the PGC surface, a large fraction of the separation space could be utilized. That is further reflected by a spreading angle of 80.3°. The PGC material was also successful at resolving structural isomers where the C18 phase was not. It was also found that the choice of the mobile phase is important when using this material. A much larger degree of space utilization was seen with methanol than with acetonitrile that displayed a spreading angle of only 40.8°.
Language eng
Field of Research 030108 - Separation Science
Socio Economic Objective 970103 - Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2012, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30059603

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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Created: Fri, 17 Jan 2014, 13:41:54 EST by Paul Stevenson

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