胆甾液晶冠醚固定相的气相色谱性能研究

STUDIES ON CHROMATOGRAPHIC CHARACTERISTICS OF CHOLESTERIC MESOMORPHIC CROWN ETHER AS STATIONARY PHASE FOR GAS CHROMATOGRAPHY

４′－胆甾烯氧羰基苯并－１５－冠－５（ＣＨ－Ｂ－１５－Ｃ－５）在不同温度范围内其相态不同，在同一温度范围内因处理方式不同而物性亦相去甚远，用其作成了兼具气固色谱（ＧＳＣ）、普通气液色谱（ＧＬＣ）和冠醚液晶气液色谱（ＣＬ－ＧＬＣ）多种性能的固定相．用该固定相在不同条件下，对脂肪烃、脂肪醇、羧酸乙酯以及多种有机混合物等进行了ＧＳＣ，ＧＬＣ和ＣＬ－ＧＬＣ分离，发现它对这些物质有较强的分离能力，均获得对称性良好的色谱峰．还研究了该固定相的极性、选择性和稳定性等色谱性能。

The chromatographic characteristics,such as,the chemical stability,thermal stability,polarity,selectivity and the allowable operating temperature range,of CH B 15 C 5 as stationary phase for GC were studied in this paper.The separations of C 1-C 6 alcohols,ethyl asters of C 1-C 8 carboxylic acid,C 5-C 12 n alkanes and the other organic compounds mixtures were carried on the column packed with CH B 15 C 5.The results of separation were satisfactory.A possible retention mechanism is proposed to explain retention behaviours of the substances.