GAS-CHROMATOGRAPHIC CHARACTERISTICS AND APPLICATION STUDIES OF THE STATIONARY-PHASE OF CH-B-15-C-5

In this paper, separations of organic compounds, such as, n-alkanes, a lcohols, ethyl asters of C-1-C-8 carboxylic acid, halogen derivatives, position-isomers of the replacement aromatic hydrocarbon, optical iso mers of ethyl lactate and isoamyl alcohol, etc. were studied using 4'- cholestenoxycarbonyl-benzo-15-crown-5 liquid crystal crown ether (CH-B -15-C-5) as stationary phase in gas-solid chromatography (GSC), genera l gas-liquid chromatography (GLC) and crown ether liquid crystal gas-l iquid chromatography (CL-GLC). Also, the chromatographic characteristi cs, such as the chemical stability, thermal stability, selectivity, po larity and operating temperature range, of the CH-B-15-C-5 as stationa ry phase for GSC, GLC and CL-GLC systems were studied. The results sho wed that the polarity of this chromatographic column is mean-weak. the chemical and thermal stabilities and the selectivity are good and the operating temperature range is wide. The results of separations of or ganic compounds are satisfactory. (C) 1998 Elsevier Science B.V. All r ights reserved.