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Gas chromatographic determination of volatile alkenes with on-column bromination and electron-capture detection.

Cao, Xu-Liang and Hewitt, C. N. (1995) Gas chromatographic determination of volatile alkenes with on-column bromination and electron-capture detection. Journal of Chromatography A, 690 (2). pp. 187-195.

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Abstract

A method is described for the gas chromatographic-electron-capture detection determination of alkenes via on-column bromination reactions. Pyridinium bromide perbromide (PBPB) was used as the Br2 source, and a cholesterol-glass beads mixture, treated with methanol, was used to remove excess Br2. The optimum ratio of cholesterol to glass beads was found to be 1:10, at which 93% of the bromine released from PBPB can be removed, without removal of the derivitized analytes. The conversion efficiency of alkene to the brominated derivative is extremely low (less than 2%) for ethene, whereas for propene and 1-butene it is 41 and 79%, respectively. For C3---C5 alkenes, this method is 200–300 times more sensitive than analysis of the underivitized analytes by using conventional flame ionization detection.

Item Type: Article
Journal or Publication Title: Journal of Chromatography A
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 22246
Deposited By: ep_ss_importer
Deposited On: 10 Feb 2009 15:26
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 15:58
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22246

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