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Citation: WANG Peng, WANG Yu-Hong, FENG Nan, LIU Dong-Hui, JIANG Shu-Ren, ZHOU Zhi-Qiang. Chiral Resolution of Malathion and Fipronil on the Amylase Derivative Chiral Stationary Phase[J]. Chinese Journal of Applied Chemistry, ;2006, 23(10): 1170-1172. shu

Chiral Resolution of Malathion and Fipronil on the Amylase Derivative Chiral Stationary Phase

1.
Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100094

Corresponding author: ZHOU Zhi-Qiang,
Received Date: 15 November 2005
Available Online: 8 January 2006
Fund Project: 国家自然科学基金资助项目(20377052) (20377052)

The chiral resolution of malathion and fipronil enantiomers was performed by high-performance liquid chromatography with amylose tri-(S)-1-phenylethylcarbamate as chiral stationary phase.The mobile phase was n-hexane,with ethanol,1-propanol,2-propanol,1-butanol or 2-butanol used as polar modifiers.The flow rate was 1.0 mL/min and detecting wavelength was 230 nm.The best resolution factor for malathion was 0.85 with n-hexane/isopropanol as the mobile phase.The two enantiomers of fipronil could achieve baseline separation with the best resolution factor of 1.98.The optical rotations were determined by a circular dichroism detector.The elution order for malathion was +/- and that of fipronil was -/+ at 230 nm.The circular dichroism spectra for the enantiomers were also studied.
- malathion,
- fipronil,
- chiral resolution,
- amylose tri-(S)-1-phenylethylcarbamate
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