摘要
采用萃取法分离出８％敌·杀粉剂中的敌百虫，再通过测定Ｃｌ－的方法测定敌百虫含量，该方法的变异系数为１４２％，回收率为９９２％～１０１．３％。
Trichlorfor was separated by extraction from 8% Disha powder and determined by measuring the chlorine ions. The efficiency of variation and the recovery were 1.42% and 99.2%～101.3%, respectively.
