不同产地黄芪中有机氯农药残留的研究

目的进行不同产地的黄芪药材有机氯农药残留的质量评价。方法采用丙酮-水提取系统、二氯甲烷液液分配、浓硫酸磺化净化技术、弹性石英毛细管柱(30 m×0.32 mm×0.25μm)SE-54,GC-ECD检测有机氯农药残留。结果最低检测限为0.1~0.5ng/g,添加回收率为72.6%~114.8%;甘肃、内蒙等主产地黄芪有机氯农药残留远低于《中国药典》标准。结论建立了一套简捷、操作性强的检测黄芪药材有机氯农药残留的分析方法。

Study on Residues of Organochlorine Pesticides in Radix Astragali Samples from Different Field Origins

Objective To program a quality evaluation of organochlorine pesticides residue on Radix Astragali produced from different places.Methods Sonication extraction system was used,in which acetone was the extractant.Based on salting out principles,sodium chlorine was added to the extractant to separate the pesticides.Simultaneously,CH2Cl2 was also added to carry out liquid extraction,then it was purified by dense sulphuric acid,and finally detected by GC-ECD.Results The detection limits were 0.1~0.5 ng/g,recoveries of organochlorine pesticides were 72.6%~114.8%.Radix Astragali produced from Gansu,Neimeng ect were more lower than the standard of pharmacopeia.Conclusion A simple and handling analytical method to detect the organochlorine pesticides of Radix Astragali has been established.