气相色谱法测定蔬菜中4种有机磷农药残留的研究

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Study on the Determination of Four Organophosphorus Pesticide Residues in Vegetables by Gas Chromatography

ZHANG Yuanyuan （Yuci District Comprehensive Inspection and Testing Center， Jinzhong O3060o， China）

Abstract： An accurate and effcient gas chromatography method was established for the determination of four organophosphorus pesticide residues in vegetables by screening extraction reagents，selecting extraction methods，and optimizing concentration methods.The experimentalresults showed that there was a good linear relationship between the four pesticides in the range of 0.03μg⋅mL-1 to 0.50μg⋅mL-1 .The detection limits of the methods was 0.01mg.kg-1 the quantification limit was 0.03mg.kg-1 ，and the spiked recovery rates were 96.2% to 102.7% ，with RSD of 0.7% to 3.3% . This method is suitable for high-throughput detection of four organophosphorus pesticide residues in vegetable samples.

Keywords： gas chromatography method; vegetables; organophosphorus pesticides

有机磷农药是蔬菜种植中常用的一类广谱高效的杀虫剂，通过抑制害虫神经系统来发挥作用，用以保障蔬菜的产量与品质[1-3]。（剩余3190字）