Determination of Four Pesticides in Soil by Homogeneous Ionic Liquid-based Microextraction Coupled with High-performance Liquid Chromatography

doi:10.1007/s40242-013-2388-0

Abstract

Abstract:

Homogeneous ionic liquid microextraction was developed for the simultaneceus extraction of dimethomorph, mefenacet, isoprothiolane and oxadiazon from soil. 1-Butyl-3-methylimidazolium tetrafluoroborate was used as extraction solvent, and ammonium hexafluorophosphate was used as ion-pairing agent. High-performance liquid chromatography(HPLC) was employed for separation and determination of the analytes. The calibration curves show good linear relationship(r>0.9988). The recoveries are between 74.2% and 97.9% with relative standard deviations(RSDs) lower than 5.97%. The present method is free of volatile organic solvents, and expenditures of sample, extraction time and solvent are lower, compared with ultrasonic and Soxhlet extraction. There was no obvious diffe- rence in the extraction recoveries of pesticides obtained by the three extraction methods.

Key words: Pesticide, Soil, Ionic liquid-based microextraction, High-performance liquid chromatography(HPLC)

YAN Rui, SHAO Ming-yuan, LIANG Zhen-fen, ZHANG Han-qi, YU Ai-min. Determination of Four Pesticides in Soil by Homogeneous Ionic Liquid-based Microextraction Coupled with High-performance Liquid Chromatography[J]. Chemical Research in Chinese Universities, 2013, 29(2): 218-222.

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