40%联苯肼酯·乙螨唑悬浮剂的高效液相色谱分析

Analysis of Bifenazate·Etoxazole 40% SC by HPLC

采用高效液相色谱方法,使用乙腈-水作为流动相,ZORBAX SB-C18不锈钢色谱柱和紫外可变波长检测器,在220 nm波长下对试样中联苯肼酯和乙螨唑同时进行分离和定量分析。该方法中联苯肼酯和乙螨唑线性相关系数分别为0.999 5和0.999 3,标准偏差分别为0.14、0.11;变异系数分别为0.55%、0.72%;平均回收率分别为99.49%、99.15%。

A method was developed for the determination of 40%Bifenazate·Etoxazole SC by high-performance liquid chromatography on C18 column with avariable wave length UV detector,using acetonitrile and water as mobile phase.The results showed that the linear correlations for bifenazate and etoxazole were 0.999 5 and 0.999 3,the standard deviations were 0.14 and 0.11,the coefficients of variation were 0.55%and 0.72%,the average recoveries were 99.49%and 99.15%,respectively.