杀虫脒对水稻螟虫有优异的防治效果,然而,杀虫脒的残留毒性却是一个值得注意的问题。我们在研究杀虫脒在水稻上残留动态的同时,试验比较了几种测定杀虫脒残留量的气相色谱测定方法。试验结果表明,采用酸、碱强水解、液——液分配提取净化法,比一般采用的酸解、碱解同时进行蒸馏提取净化法较为简便,而利于大批量的常规残留测定。 Chlordimeform has excellent control effect on rice stem borers. However, the residual toxicity of chlordimeform is a problem worth noting. While studying the residual activity of chlordimeform on rice, we compared several gas chromatographic methods for the determination of chlordimeform residues. The test results show that acid and alkali hydrolysis, liquid - liquid extraction and purification method, compared with the commonly used acid hydrolysis, alkali hydrolysis distillation extraction method at the same time more convenient, but conducive to the determination of large quantities of conventional residues.