25%苯氧喹啉悬浮剂高效液相色谱分析

Analysis of Quinoxyfen 25% SC by HPLC

[目的]利用高效液相色谱仪测定25％苯氧喹啉悬浮剂有效成分含量。【方法】采用的色谱条件为ODS C18不锈钢柱，紫外可见光检测器，检测波长235nrn，以乙腈-水（体积比75：25）为流动相，流速1．0mL／min。【结果】外标法对制剂中的苯氧喹啉进行定量分析，在50．6-253mg／L范围内峰面积与有效成分质量浓度呈线性关系，线性相关系数为0．9999，平均回收率为99．68％，测定出该分析方法的标准偏差为0．085，变异系数为0．34％。【结论】该分析方法简单易行，可用于生产质检中的产品含量检测。

[Aims] Effective components of quinoxyfen 25% SC was analysised by HPLC. [Methods] The method was conducted with a Eclipse ODS C18 and a UV detector at 235 nm, using acetonitrile and water（75 ： 25, by vol） as the mobile phase with a flow rate of 1.0 mL/min. [Results] Quantitative analysis of quinoxyfen SC was carried out using external standard method. The result showed that the good linear relationship for quinoxyfen within the range of 50.6-253 mg/L, the linear correlation coefficient was 0.9999. The average recovery was 99.68%, the standard deviation was 0.085, the variation coefficient was 0.34%. [Conclusions] This analysis method was easy and practicable, which would be used as content analysising in the quality checking of production.