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. ISSN 1873-3778

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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:
Journal Article
Journal or Publication Title:
Journal of Chromatography A
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/ge
Subjects:
ID Code:
22246
Deposited By:
Deposited On:
10 Feb 2009 15:26
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 06:29