摘要
在全国甲基-β-环糊精(PMBCD),2,6-0-二丁基-3-O-丁酰基-β-环糊精(DBBCD),2,6-O-二戊基-3-O-乙酰基-β-环糊精(DPABCD),2,6-O-二壬基-3-O-三氟乙酰基-β-环糊精(DNBCD)及混合固定相(PMBCD+DBBCD)等5种手性固定相上分离了除虫剂二氯菊酸甲酯(PI)的对映异构体,并测定了部分热力学数据。发现DPABCD对PI的分离效果最好,且不同固定相对PI具有相同或相似的拆分机理。
The retention behavior of permethrinic acid methyl ester(PI) was investigated on five cyclodextrin phases:permethylated β-cyclodextrin(PMBCD),2,6-di-o=butyl-3-O-butyryl-β-cycloedextrin (DBBCD),2,6-Di-o-nonyl-3-O-triflouroactyl-O-β-cyclodextrin(DNBCD),2,6-Di-O-pentyl-3-o-acetylβ-clodextrin (DPABCD) and the mixed CSP (PMBCD + DBBCD). It was found that the separation effect of DPABCD is the best. Some thermodynamic data of PI were obtained. The ratios of △(△H)/△(△S) on different CSPs were very close, which means that enthalpy-entropy compensation may be presented in chiral recognition and PI may have the same retention mechanism on different CSPs.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2000年第2期172-175,共4页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金