Chinese Journal of Chromatography

Chinese Journal of Chromatography ›› 2010, Vol. 28 ›› Issue (12): 1200-1203.DOI: 10.3724/SP.J.1123.2010.01200

• Technical Notes • Previous Articles     Next Articles

Determination of dichlorvos in water by microwave-assisted-headspace-liquid-phase microextraction coupled with high performance liquid chromatography

KONG Na1, ZOU Xiaobing1,2*, HUANG Rui2,3, XIA Zhining1,2, WEI Xinyang1   

  1. 1. College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China; 2. College of Bioengineering, Chongqing University, Chongqing 400030, China; 3. College of Criminal Investigation Law, Southwest University of Political Science and Law, Chongqing 401120, China
  • Received:2010-08-20 Revised:2010-10-20 Online:2010-12-28 Published:2010-08-28

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Abstract: A novel method for the determination of dichlorvos in environmental water samples has been developed using microwave-assisted-headspace-liquid-phase microextraction (MAE-HS-LPME) coupled with high performance liquid chromatography (HPLC). The influences of extraction parameters in the sample matrix were investigated. Under optimized experimental conditions, the detection limit (S/N=3), the quantification limit (S/N=10) and the enrichment factor of the proposed method for the target analyte were 0.96 μg/L, 3.20 μg/L and 54, respectively. The recoveries of target analyte spiked in real water samples were 87.4%~103%. The extraction performance of MAE-HS-LPME to the target analyte was also compared with liquid-liquid extraction (LLE). The results indicated that the developed method is simple, rapid, efficient, solvent-saving, highly selective and widely applicable.

Key words: dichlorvos, environmental waters, high performance liquid chromatography (HPLC), headspace-liquid-phase microextraction (HS-LPME), microwave-assisted extraction (MAE)