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摘要
A new sample pretreatment method, solid-phase extraction combined with dispersive liquidliquid microextraction (SPE-DLLME), was established for the sensitive determination of carbamates in environmental water samples. Three carbamates (carbofuran, carbaryl, and pirimicarb) were extracted from water samples by SPE. After the elution of the desired compounds from the sorbent using acetonitrile, DLLME technique was performed on the obtained solution. The analytes were determined by high performance liquid chromatography. The method provided ultra-enrichment factors for carbamates and ranged from 5408 to 7647. The calibration curves were linear in the range of 0.055 mu g L-1 for carbofuran and carbaryl, and 0.015 mu g L-1 for pirimicarb in water, respectively. The limits of detection (LODs) were in the ranges of 0.0010.01 mu g L-1. The proposed method was successfully applied for the selective extraction and determination of carbamates in environmental water samples.
- 出版日期2012
- 单位湖北大学
