固相萃取-气相色谱法检测食品中农药残留方法的研究

目的:为寻求最佳食品中农药残留检测方法。方法:采用固相萃取作为农药残留检测前处理,然后采用GC法测定国家食品污染物监测要求的24种农药,包括有机磷13种:甲拌磷、马拉硫磷、对硫磷、甲基对硫磷、毒死蜱、甲基毒死蜱、甲胺磷、久效磷、敌敌畏、乙酰甲胺磷、乐果、氧化乐果、乙拌磷;氨基甲酸酯3种:呋喃丹、甲萘威(西维因)、抗蚜威;菊酯5种:氰戊菊酯、氯氰菊酯、氯菊酯、溴氰菊酯、氟氯氰菊酯;有机氯3种:六六六、滴滴涕、百菊清。结果:将19种农药混合标准溶液在0.005 mg/L～0.05 mg/L0、.05 mg/L～0.5 mg/L和0.1 mg/L～1.0 mg/L三个水平添加到蔬菜和水果样品中进行方法的精密度试验,方法的添加回收率在70%～104%之间,变异系数小于15%。方法的检出限在0.0001 mg/kg～0.005 mg/kg。结论:固相萃取-气相色谱法检测食品中农药多残留方法精密度、回收率满意、确实可行。

Research on detection of pesticide residues in food by solid phase extraction-gas chromatography method

Objective: To seek the best examination method for the detection of pesticide residues in food.Methods: Solid phase extraction was used for pretreatment of pesticide residue detection and GC was adopted to determine the 24 kinds of pesticide residues,which were requested by national food contamination monitoring.Results: The mixed standard solution composed by 19 kinds of pesticides was added into samples of vegetables and fruits for accuracy test with 3 levels of 0.005 mg/L~0.05 mg/L,0.05 mg/L~0.5 mg/L and...