吉林省食用菌中二硫代氨基甲酸酯类农药残留监测及结果分析
目的 应用GC-MS的方法测定菌类中二硫代氨基甲酸酯类农药的总含量（以CS2），了解吉林省内，几种菌类食品的二硫代氨基甲酸酯的残留情况。方法 样品在加热密闭的顶空瓶中，加入氯化亚锡-盐酸溶液，反应生成二硫化碳，冷却后用正己烷萃取出二硫化碳，将正己烷取出，进GC-MS测定。结果 GC-MS的方法测定食用菌类中二硫代氨基甲酸酯类农药检出限为0.005mg/kg，定量限为0.015 mg/kg，在0.02～0.5mg/L范围内线性均良好（r>0.9990）,福美双转化率在90%～100%之间。部分菌类食品中存在二硫代氨基甲酸酯的残留检出率为25.2%，浓度范围在0.011～0.098mg/kg（以CS2），其中香菇的检出率含量最高平均值在0.067mg/kg,检出率57.89%。结论 GC-MS方法是测定菌类食品中二硫代氨基甲酸酯类农药（以CS2）较好的方法，吉林省内菌类食品中含有一定量的二硫代氨基甲酸酯的残留，均低于GB2763-2016中规定的最大残留量1mg/kg,但是检出率较高，为今后的二硫代氨基甲酸酯类农药研究起到一定的借鉴作用。
Objective The total content of dithiocarbamate pesticides in fungi (CS2) was determined by GC-MS. The residues of dithiocarbamate in several fungi food in Jilin Province were investigated. Methods The sample was heated and sealed in a headspace bottle, then added stannous chloride-hydrochloric acid solution to react to form carbon disulfide. After cooling, carbon disulfide was extracted with n-hexane, then n-hexane was taken out and determined by GC-MS. Results The detection limit of dithiocarbamate pesticides in edible fungi by GC-MS was 0.005 mg/kg, the quantitative limit was 0.015 mg/kg, the linearity was good in the range of 0.02-0.5 mg/L (r > 0.9990), and the conversion rate of Fumei was between 90% and 100%. The detection rate of dithiocarbamate residues in some fungi food was 25.2%. The concentration range was 0.011-0.098 mg/kg (CS2). The highest detection rate of Lentinus edodes was 0.067 mg/kg, and the detection rate was 57.89%. Conclusion GC-MS method is a better method for the determination of dithiocarbamate pesticides (CS2) in fungi food. There are a certain amount of dithiocarbamate residues in fungi food in Jilin Province, which are lower than the maximum residues of 1 mg/kg stipulated in GB2763-2016, but the detection rate is higher, which can be used as a reference for future research on dithiocarbamate pesticides.pesticides.
标题：吉林省食用菌中二硫代氨基甲酸酯类农药残留监测及结果分析
英文标题：Monitoring and analysis of dithiocarbamate pesticide residues in edible eungi in Jilin province
作者：
杨大鹏 吉林省疾病预防控制中心
边疆 吉林省疾病预防控制中心
马杰 吉林省疾病预防控制中心
刘思洁 吉林省疾病预防控制中心
中文关键词:食用菌,二硫代氨基甲酸酯,残留,结果分析,
英文关键词:edible eungi,dithiocarbamate,residues,result analysis,
发表日期：2018-11-26
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