Chiral separations of pesticide enantiomers by high-performance liquid chromatography using cellulose triphenylcarbamate chiral stationary phase.
The direct chiral separations of pesticide enantiomers by high-performance liquid chromatography by applying self-prepared cellulose triphenylcarbamate chiral stationary phase are performed. The mobile phase is n-hexane modified by isopropanol as a polar modifier. Nine chiral pesticides (benalaxyl, vinclozolin, diclofop-methyl, tebuconazole, quizalofop-ethyl, hexaconazole, lactofen, isocarbophos, and paclobutrazol) show enantioselectivity on the chiral stationary phase. An online circular dichrorism detector is used for identifying the pesticide enantiomers. The influences of the volume content of isopropanol and column temperature on the separations are investigated. The thermodynamic parameters related to the chiral distinguish mechanisms are also calculated.
Wang
Peng
P
Department of Applied Chemistry, China Agricultural University, Beijing 100094, China.
Jiang
Shuren
S
Liu
Donghui
D
Shan
Weili
W
Zhang
Hongjun
H
Zhou
Zhiqiang
Z