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。 An analytical method for the determination of organochlorine pesticide residues in American ginseng by gas chromatography was established. Samples were extracted with acetone and liquid-liquid partitioned with methylene chloride in the presence of NaCl. The extracts were purified by concentrated H2SO4 using a SE-54 elastic quartz capillary column and GCECD to detect organochlorine (BHC, DDT isomers and VII). Chlorine, aldrin) residues of pesticides, the minimum detection concentration of 3.2 × 10-2ng/g ~ 1.4ng/g, added recovery rate of 80% ~ 133.18%, and the production of American ginseng in Beijing and Northeast Medicinal materials were measured for actual residue.