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[摘要]
建立了西洋参中有机氯农药残留量的气相色谱的分析方法。样品以丙酮提取,在NaCl存在下,以二氯甲烷进行液液分配,提取液以浓H2SO4净化,采用SE-54弹性石英毛细管柱,GCECD检测有机氯(六六六,DDT异构体及七氯,艾氏剂)农药的残留量,最低检测浓度为3.2×10-2ng/g~1.4ng/g,添加回收率在80%~133.18%,并对北京及东北产西洋参药材进行了实际残留量测定。
[Key word]
[Abstract]
A GC-ECD method for determination of the residual organochlorine pesticides in Panax quinquefoliunz was described using SE-54 column. The residues were extracted from sample with acetone by saturating the extraction solvent with NaCI and simultaneously liquid-liquid partitioning by dichlormethane. The extracts were cleaned up by concentrated HZSO,. The detection limits were 0.032 ng/g-1. 4 ng/g. Recoveries of organochlorine pesticides were 80%-133.18%
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