A method for the determination of nerve warfare agent and vesicant war gas in polluted soil was estab ˉ lished by GC-MS_SIM. The sample preparation of six warfare agent s in soil and the extraction yield of two step extractions for these agents were studied. 建立了土壤中神经性毒剂及糜烂性毒剂GC-MS-SIM分析法,对土壤中6种毒剂的样品制备和二步萃取方法进行了研究;