采用对田间植株直接施药、定期采样提取、高效液相色谱仪检测的方法,以毒死蜱杀虫剂为材料,对生菜和彩椒两种蔬菜中农药的残留消除动态进行探究.结果表明:在1.6 mg/kg和3.2 mg/kg施药剂量下,毒死蜱在生菜和彩椒中的消解半衰期分别为2.05～ 2.16 d、1.49～ 2.23 d,半衰期均小于3d.“,”The degradation dynamic and removal methods of chlorpyrifos in vegetables were investigated using high performance liquid chromatography (HPLC).Lettuce and bell peppers were selected as representative vegetables.Results showed that the biological half-live of chlorpyrifos were about 2.05-2.16 days and 1.49-2.23 days at the application rates of 1.6 and 3.2 mg/kg in lettuce and bell pepper respectively,they were all less than 3 days.