Comparison of Enantioseparations of 19 Chiral Polychlorinated Biphenyls by 5 Different Polysaccharides Chiral Columns

文献类型： 外文期刊

第一作者： Xu Na-Na

作者： Xu Na-Na;Mu Peng-Qian;Jia Qi;Chai Ting-Ting;Yin Zhi-Qiang;Shu-Ming, Yang;Jing, Qiu;Chai Ting-Ting

作者机构：

关键词： Polychlorinated biphenyl;Enantiomer;Chiral stationary phase;Optical rotation;Elution order

期刊名称：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY （ 影响因子：1.134； 五年影响因子：0.909 ）

ISSN： 0253-3820

年卷期： 2015 年 43 卷 6 期

页码：

收录情况： SCI

摘要： In this study, 19 stable chiral polychlorinated biphenyls (PCBs) were stereoselectively separated on five different chiral columns packed with polysaccharides derivatives, using normal-phase high performance liquid chromatography. Satisfactory separations were obtained on Lux Cellulose-1, Cellulose-3 and Cellulose-4 column, while Cellulose-2 and Amylose-2 column showed very poor enantioselective discriminability for these chiral PCBs. PCBs 91, 136, 139, 149, 171 and PCBs 45, 84, 88, 95, 131, 135, 144, 149 could be baseline separated on Cellulose-1 and Cellulose-3, respectively. PCBs 88, 131, 139, 171 and 174 could be thoroughly resolved on Cellulose-4. However, PCBs 132, 175, 176, 183, 196 and 197 were partially separated on these three columns. In the range of 5 degrees C-30 degrees C, the plots of natural logarithms of the selectivity factors (ln alpha) versus the inverse of temperature (1/T) were linear on Cellulose. 1 and Cellulose. 3, but it was not linear on Cellulose-4. The separations of chiral PCBs were driven by enthalpy, meaning that low temperature was advantageous to separation. In addition, the enantiomeric elution orders of PCBs were confirmed with an online optical rotation detector. The enantioseparation and elution orders were associated with the number and position of chlorine substituted in the benzene ring of chrial PCBs. This work will be very helpful to prepare and analyze single enantiomers of chiral PCBs.

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