TY - JOUR

T1 - Gas chromatographic determination of volatile alkenes with on-column bromination and electron-capture detection.

AU - Cao, Xu-Liang

AU - Hewitt, C. N.

PY - 1995

Y1 - 1995

N2 - 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.

AB - 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.

U2 - 10.1016/0021-9673(94)00855-4

DO - 10.1016/0021-9673(94)00855-4

M3 - Journal article

VL - 690

SP - 187

EP - 195

JO - Journal of Chromatography A

JF - Journal of Chromatography A

SN - 1873-3778

IS - 2

ER -