采用高效液相色谱外标法,以甲醇+水为流动相,使用以ODS-C18 5μm为填料的不锈钢柱和二极管阵列检测器,在230 nm波长下对18%螺虫·唑虫酰胺悬浮剂进行分离和定量分析。结果表明螺虫乙酯和唑虫酰胺的线性相关系数分别为0.9999、0.9999;标准差为0.015、0.031;变异系数为0.14%、0.37%;平均回收率分别为99.99%、100.03%。 High performance liquid chromatography with external standard method, methanol + water as mobile phase, the use of ODS-C18 5μm as a filler stainless steel column and diode array detector, at 230 nm wavelength 18% spirotetraburamide suspension agent For separation and quantitative analysis. The results showed that the linear correlation coefficients of spirotetramat and thiamethoxam were 0.9999,0.9999 respectively; the standard deviations were 0.015,0.031; the coefficients of variation were 0.14% and 0.37%; the average recoveries were 99.99% and 100.03% respectively.