【摘要】 目的建立蔬菜中残留有机氯及有机磷农药的大口径毛细管气相色谱测定法。方法采用大口径毛细管气相色谱分析技术代替传统的填充柱气相色谱技术,采用程序升温分离蔬菜中残留的多种有机氯及有机磷农药。结果本实验中敌百虫、敌敌畏、甲拌磷、乐果、甲基对硫磷、杀螟硫磷、马拉硫磷、倍硫磷、乙基1605最低检出浓度为0.004～0.008mg/kg,线性范围为0.5～5.0μg/ml,相关系数为0.9965～0.9990,平均回收率范围为88.47%～96.51%,RSD为2.98%～5.16%。α-666、β-666、γ-666、δ-666、p,p’-DDE、o,p’-DDT、p,p’-DDD、p,p’-DDT的线性范围为0.002～0.2μg/ml,相关系数为0.9994～0.9997,最低检出浓度为0.0007～0.001mg/kg,平均回收率范围86.51%～98.45%,RSD为2.47%～5.32%。结论该法可以很好地分离蔬菜中残留的多种有机氯和有机磷农药,灵敏度高,结果准确可靠。更多还原

【Abstract】 Objective To establish a method for the determination of organochlorine and organophosphorus pesticides residues in vegetables.Methods The heavy-caliber capillary gas chromatography and the program control temperature were used to separate and determine the residuals of the pesticides.Results As for the organophosphorus pesticides, the detection limits were 0.004-0.008 mg/kg;The linear range was 0.5-5.0 μg/ml;The correlation coefficients were 0.996 5-0.999 0;The rates of recovery were 88.47%-96.51%;Relative standard deviations were 2.98%-5.16% .As for the organochlorine pesticides, the detection limits were 0.0007-0.001 mg/kg;The linear range was 0.002-0.2 μg/ml;The correlation coefficients were 0.999 4-0.9997;The rates of recovery were 86.51%-98.45%;Relative standard deviations were 2.47%-5.32%.Conclusion This method may efficiently separate and determine the organochlorine and organophosphorus pesticides residues in vegetables with good sensibility and accuracy.更多还原