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研究两种 β-环糊精衍生物 (全甲基 - β- CD与七 - (2 ,6 -二 - O-戊基 - 3- O-烯丙基 ) - β-CD)混合 GC固定相的分离性能 .用毛细管气相色谱法研究苯的位置异构体在两种环糊精混合固定相上的分离情况 ,从柱效、固定相的结构及其与溶质的作用方式讨论两种环糊精混合固定相的分离机制 .所测试的大部分苯位置异构体在混合固定相柱上均能得到较好的分离 ,其中溴甲苯等位置异构体在混合固定相上的分离因子偏离加和效应 ,出现了协同效应 .两种 β-环糊精衍生物组成的混合固定相的保留性能不同于两种常规混合固定相
The effects of two kinds of β-cyclodextrin derivatives (mixture of GC-β-CD and heptakis- (2,6-di-O-amyl-3-allyl) -β-CD) The separation performance of benzene position isomers on the two cyclodextrin mixed stationary phases was studied by capillary gas chromatography. Two kinds of cyclodextrins were discussed from the aspects of column efficiency, the structure of stationary phases and their interaction with solutes Separation mechanism of the fine mixed stationary phase.Most of the benzene position isomers tested in the mixed stationary phase column can be better separation, including toluene toluene and other positional isomers on the mixed stationary phase separation factor deviation plus And effect, there is a synergistic effect.The retention performance of the mixed stationary phase consisting of two β-cyclodextrin derivatives is different from that of the two conventional mixed stationary phases