摘要
以γ-CD为毛细管电泳手性选择剂,对苯氧羧酸类除草剂对映体的分离进行了研究。考察了手性选择剂的种类、γ-CD浓度、SDS浓度、背景电解质浓度、pH值等对分离的影响。结果发现,选择30mmol.L-1γ-CD+100mmol.L-1 SDS+75mmol.L-1 H3PO4作为电泳缓冲体系(pH值2.0),2,4-滴丙酸、2,4,5-滴丙酸、2-(3-氯苯氧基)丙酸对映体完全分离,2-(4-氯苯氧基)丙酸、2-苯氧基丙酸对映体部分分离,分离度分别为3.42、8.27、2.83、0.89、0.50。
The chiral separation of phenoxy carboxylic acid herbicides enantiomers by capillary electrophore- sis was studied with ）,-CD as a novel chiral selector. The influences of the kinds of chiral selector, the concentra- tion of ·-CD,SDS and the background electrolyte,and the pH value were investigated. The result showed that using the optimum buffer system with pH value of 2.0 consisting of 30 mmol· L-1 7-CD,100 mmol· L-1 SDS and 75 mmol · L-1 H3 PO4, the enantiomers of 2,4-dichlorophenoxy propionic acid, 2,4,5-trichlorophenoxy pro- pionic acid,2-（3-chlorophenoxy） propionic acid could be fully separated and the enantiomers of 2-phenoxy pro- pionic acid and 2-（4-chlorophenoxy） propionic acid could be partly separated. Their separation degree were 3.42,8. 27,2. 83,0.89,0. 50,respectively.
出处
《化学与生物工程》
CAS
2012年第3期89-91,94,共4页
Chemistry & Bioengineering
基金
国家自然科学基金资助项目(20877071)
关键词
胶束电动色谱
手性拆分
苯氧羧酸类除草剂
环糊精
micellar electrokinetic chromatography （MEKC） chiral separation phenoxy carboxylic acid her-bicides cyclodextrin
