15％甲维·吡虫啉悬浮剂高效液相色谱分析

摘要

A method was developed for the analysis of 15 % suspension concentrate formulation of emamectin benzo-ate and imidacloprid by high-performance liquid chromatography (HPLC) on ClS column with UV-absorbance detector (wavelength 245 nm) and mobile phase of methanol- acetonitrile-water (volume ratio of 50:40 : 10, adding 0.01% triethylamine). The results showed that the standard deviations, variation coefficients and average recoveries of emamectin benzoate and imidacloprid were 0. 04, 0. 77% , 99.07% and 0. 05, 0. 49% , 100. 04% , respectively.%采用高效液相色谱法，以甲醇-乙腈-水（体积比为50：40：10，加入0．01％三乙胺）为流动相，使用C18反相柱和紫外可变波长检测器（波长245nm），用外标法对15％甲维刈比虫啉悬浮剂进行了定量分析。结果表明，方法中甲维盐和吡虫啉标准偏差分别为0．04，0．05，变异系数分别为0．77％，0．49％，平均回收率分别为99．07％，100．04％。