Hyphenation of supercritical fluid chromatography and two-dimensional gas chromatography-mass spectrometry for group type separations

Show simple item record

dc.contributor.author Potgieter, H.
dc.contributor.author Van der Westhuizen, R.
dc.contributor.author Rohwer, Egmont Richard
dc.contributor.author Malan, D.
dc.date.accessioned 2013-09-19T14:13:14Z
dc.date.available 2013-09-19T14:13:14Z
dc.date.issued 2013-06
dc.description.abstract The Fischer–Tropsch (FT) process produces a variety of compounds over a wide carbon number range and the synthetic crude oil produced by this process is rich in highly valuable olefins and oxygenates, which crude oil only contains at trace levels. The characterization of these products is very challenging even when using comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC × GC–TOF-MS). The separation between cyclic paraffins and olefins is especially difficult since they elute in similar positions on the GC × GC chromatogram and since they have identical molecular masses with indistinguishable fragmentation patterns. Previously, a high performance liquid chromatography (HPLC) fractionation procedure was used prior to GC × GC–TOF-MS analysis to distinguish between alkenes and alkanes, both cyclic and non-cyclic, however, there was co-elution of the solvents used in the HPLC fractionation procedure, and the volatile components in the gasoline sample and the dilution introduced by the off-line fractionation procedure made it very difficult to investigate components present at very low concentrations. The hyphenation of supercritical fluid chromatography (SFC) to GC × GC is less complicated and the removal of the supercritical CO2 can be easily achieved without any loss of the volatile sample components, eliminating the introduction of co-eluting solvents as well as the dilution effect. This paper describes the on-line hyphenation of SFC to a GC × GC system in order to comprehensively characterize the chemical groups (saturates, unsaturates, oxygenates and aromatics) in an FT sample. en
dc.description.librarian hb2013 en
dc.description.librarian ai2014
dc.description.uri http://www.elsevier.com/locate/chroma en
dc.identifier.citation Potgieter, H, Van der Westhuizen, R, Rohwer, E & Malan D 2013, 'Hyphenation of supercritical fluid chromatography and two-dimensional gas chromatography-mass spectrometry for group type separations', Journal of Chromatography A, vol. 1294, no. 6, pp. 137-144. en
dc.identifier.issn 0021-9673 (print)
dc.identifier.issn 1873-3778 (online)
dc.identifier.other 10.1016/j.chroma.2013.04.020
dc.identifier.uri http://hdl.handle.net/2263/31759
dc.language.iso en en
dc.publisher Elsevier en
dc.rights © 2013 Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Journal of Chromatography A.Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Chromatography A, vol.1294, no. 6, 2013. doi.: 10.1016/j.chroma.2013.04.020 en
dc.subject Supercritical fluid chromatography en
dc.subject Chromatography en
dc.subject Hyphenation en
dc.subject Light oil en
dc.subject.lcsh Fischer-Tropsch process en
dc.subject.lcsh Chromatographic analysis en
dc.subject.lcsh Synthetic fuels en
dc.subject.lcsh Mass spectrometry en
dc.title Hyphenation of supercritical fluid chromatography and two-dimensional gas chromatography-mass spectrometry for group type separations en
dc.type Postprint Article en


Files in this item

This item appears in the following Collection(s)

Show simple item record