为了评价对硫磷-西维因合剂的毒性和在生物体内的残留情况,本文就对硫磷、西维因和这两种农药的合剂(乙-西合剂)在大鼠肝、脑、血中残留的提取、净化及气相色谱测定方法进行了研完。实验表明,两种农药在肝、脑、血中的回收率均在90%以上,最低检出量均可达10~(-10)克。本文还对西维因的三氟醋酸酐衍生化方法进行了研究。 In order to evaluate the toxicity of parathion-cimetidine mixture and its residual in vivo, this paper studied the effects of parathion, In the residual extraction, purification and gas chromatography method was finished. The experimental results show that the recoveries of the two pesticides in the liver, brain and blood are over 90%, the minimum detectable amount can reach 10 ~ (-10) g. In this paper, the triflate acetic anhydride derivatization method was also studied.