采用高效液相色谱法,以甲醇和水为流动相,使用C18色谱柱和紫外可变波长检测器,在240 nm波长下对40%哒螨·螺螨酯悬浮剂进行分离和定量分析。结果表明,在该分析方法下,螺螨酯和哒螨灵的线性相关系数分别为0.999 4和0.999 5,标准偏差分别为0.034和0.040,变异系数分别为0.11%和0.40%,平均回收率分别为99.75%和99.51%。 High performance liquid chromatography with methanol and water as the mobile phase, C18 column and UV-vis detector was used to separate and quantify 40% pyridaben spirodiclofte suspension at 240 nm. The results showed that the linear correlation coefficients of spirodiclofen and pyridaben were 0.999 4 and 0.999 5, respectively. The standard deviations were 0.034 and 0.040, respectively, and the coefficients of variation were 0.11% and 0.40%, respectively. The average recoveries were 99.75% and 99.51%.