气相色谱法在蔬菜中农药残留检测的实验研究

目的:了解气相色谱法在蔬菜农药残留检测中的应用情况.方法:文章依据随机抽样原则抽取5份样品,将样品切碎后匀浆粉碎,并经超声提取处理.利用HP-5弹性石英毛细管柱,测定了样品中残留的有机磷农药、氨基甲酸酯农药含量.结果:在0.01～1.00μg·mL-1加标浓度下,有机磷农药具有良好的线性关系,回收率为85.0％～100...

Experimental Study on the Detection of Pesticide Residues in Vegetables by Gas Chromatography

Objective:To understand the application of gas chromatography in detection of pesticide residues in vegetables.Method:The article selected 5 samples according to the principle of random sampling.The samples were chopped,homogenized,pulverized and processed by ultrasonic extraction.The residual organophosphorus pesticides and carbamate pesticides in the samples were determined by HP-5 elastic quartz capillary column.Result:The organophosphorus pesticides had a good linear relationship at the standard concentration of 0.01~1.00μg·mL^-1,the recoveries were 85.0%~100.0%,and the RSD were 2.2%~4.9%;at the standard concentration of 0.01~0.30μg·mL^-1,the carbamate pesticides had a good linear relationship,the recoveries were 80.0%~95.0%,and the RSD were 3.2%~4.5%.Conclusion:gas chromatography can be used to detect pesticide residues in vegetables.