Published: Journal of Chromatographic Science, Volume
37, Number 9, October 1999, pp. 395-399
Synergistic Effect of Heptakis(2,3,6-tri-o-pentyl)-b-Cyclodextrin
and o-Methyl-p-Phenylene-bis-(p-Heptoxy Benzoate) Mixed
Stationary Phase in Capillary Gas Chromatography
L.M. Yuan1, P. Ai1, M. Zi, R.N. Fu, S.H. Gui, X.X. Chen,
and R.J. Dai
The separations for benzene–cyclohexane, cyclohexane–hexane,
halogen hydrocarbons, aromatics, phenol, and alcohol on heptakis(2,3,6-tri-o-pentyl)-b-cyclodextrin
and o-methyl-p-phenylene-bis-(p-heptoxy benzoate) liquid
crystalline mixed stationary phase in capillary gas chromatography are carried
out. It is observed that the chromatographic retention properties for most of
the pairs tested on the mixed stationary phase are not the simple addition of
2 pure phases. These facts show that there exists a synergistic effect in the
mixed stationary phase. This effect depends on the mixing ratio of mixed stationary
phases and the linear velocity of the carrier gas.
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