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对35%虫螨腈·茚虫威悬浮剂测定方法进行研究。采用高效液相色谱法分析虫螨腈·茚虫威复配制剂,使用C18反相柱和紫外可变波长检测器,以甲醇-水为流动相,用外标法对有效成分进行分析和定量。高效液相色谱分析测定虫螨腈、茚虫威的标准偏差分别为0.143和0.110,变异系数分别为0.56%和1.08%,平均回收率分别为99.4%和99.3%。方法具有简便、快捷、精密度和准确度高的特点。
The method of determination of 35% chlorfenapyr and indoxacarb was studied. The high performance liquid chromatography (HPLC) was used to analyze the composition of ciclofenac and indoxacarb. The mobile phase was methanol-water using C18 reversed-phase column and ultraviolet variable wavelength detector. The active constituents were analyzed and quantified by external standard method . The standard deviation of chlorfenapyr and indoxacarb was 0.143 and 0.110, respectively. The coefficients of variation were 0.56% and 1.08%, respectively. The average recoveries were 99.4% and 99.3%, respectively. The method is simple, fast, precise and accurate.