title: [Determination of dichlorvos in water by microwave-assisted-headspace-liquid-phase microextraction coupled with high performance liquid chromatography].
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 microg/L, 3.20 microg/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.
authors: College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China.
authors: Na
authors: N
authors: Kong
authors: Xiaobing
authors: X
authors: Zou
authors: Rui
authors: R
authors: Huang
authors: Zhining
authors: Z
authors: Xia
authors: Xinyang
authors: X
authors: Wei
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004006:Dichlorvos / Q000032:analysis*; D059627:Liquid Phase Microextraction / Q000379:methods*; D008872:Microwaves; D010573:Pesticide Residues / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D010573:Pesticide Residues; D014874:Water Pollutants, Chemical; D004006:Dichlorvos