% ,相对标准偏差为3.5 % ,加标回收
A method for the determination of water content in emulsifiable concentrate of pesticide Jingyebao has been studied by gas chromatography on the GDX _ 102 column. The method is simple, rapid, accurate, precise, and free from hazardous agents comparing with the standard method(Karl _ Fischer's method). The standard deviation is 0.017%, while the relative standard deviation is 3.5% for determination of a sample(n=6). The recovery of the method is more than 98%.