前言 8301乳油是由甲胺磷、敌百虫和马拉松配制而成的三元复合杀虫剂,由于组分较多,不易进行测定各有效成分的含量,特别是在乳油贮存期间,会发生部分成分的分解,使得杂质增多,给分析工作带来了一定的困难。本文介绍了采用薄层容量法测定该乳油中各有效成分的含量,该法准确度高,操作简单,可用于工厂及农药检验部门测定 Introduction 8301 EC is a ternary compound insecticide made of methamidophos, trichlorfon and marathon. Due to the large amount of components, it is not easy to determine the content of each active ingredient, especially during the storage of EC, Decomposition of ingredients, making impurities increased, the analysis has brought some difficulties. This article describes the use of thin-layer volumetric method for the determination of the active ingredient content of the EC, the method of high accuracy, simple operation, can be used for the determination of the plant and pesticide testing department