三七有机磷农药残留的气相分析

目的:建立12种有机磷农药残留量的测定方法,分析不同产地的三七样品,比较产地与植株不同部位的有机磷农药残留量。方法:参照《中国药典》2010年版一部附录中农药残留量测定,采用GC-FPD检测有机磷农药残留量,并进行比较。结果:通过检测云南文山与红河泸西、弥勒产的三七样品,结果表明:样品中检测出二嗪农、对硫磷、马拉硫磷3种农药残留。在泸西和弥勒的茎叶中检测出二嗪农,残留量为0.13mg/kg;在文山大根中检测出马拉硫磷,残留量为0.03mg/kg;在文山和泸西的三七中均有检出对硫磷,且泸西茎叶的残留量高达0.58mg/kg。结论:三七有机磷农药残留量多种类同时测定方法操作简便、稳定,不仅适宜中药材农药残留的分析,也可用于农作物及其产品的有机磷农药残留量检测。

The Determination of Organophosphorus Pesticides in Panax notoginseng by Gas Chromatography

Objective:To establish a method for the determination of 12 organophosphorus pesticides in Panax notoginseng by gas chromatography,which collected from different cultivate areas.Methods:The organophosphorus pesticides were determined according to the approaches listed in the chinese pharmacopeoa published in 2010.Results:There are three pesticides(diazinon,parathion and malathion) were found in tested samples.Diazinon was found in Panax notoginseng stems and leaves from Luxi and Mile with a content of 0.13mg/kg.Parathion of 0.03mg/kg was detected in the roots from Wenshan.Malathion was contained in crude materials of notoginseng from Wenshan and Luxi,in which residue was particularly high in stems and leaves from Luxi at 0.58mg/kg.Conclusion:This is a simple and applied method for determine residues of organophosphorus pesticides.It could be uses not only on herbal materials but also other cultivates plants.The analysis results showed that pesticide residues become a haunting problem in cultivated Panax notoginseng.