采用气相色谱法,以邻苯二甲酸二戊酯为内标物,选用DB-35毛细管色谱柱,对异菌脲进行定量分析,柱箱采用程序升温,180℃保持1.0min,以20℃/min速率升至270℃,保持5.0min;进样口温度280℃,检测器(FID)温度280℃,气体流速为载气(氮气)10.0mL/min,燃气(氢气)30mL/min,助燃气(空气)300mL/min,分流比10∶1。方法的变异系数0.34%,平均回收率99.98%,标准偏差为0.171,线性相关系数为0.9994。 Gas chromatography was used with diamyl phthalate as the internal standard. The DB-35 capillary column was used for the quantitative analysis of iprodione. The oven was programmed to warm up at 180 ° C for 1.0 min and at 20 ° C / min at 270 ° C for 5.0 min; inlet temperature 280 ° C, temperature of detector (FID) 280 ° C, gas flow rate of 10.0 mL / min for carrier gas (nitrogen), 30 mL / min for gas (Air) 300mL / min, split ratio 10: 1. The coefficient of variation of the method was 0.34%, the average recovery was 99.98%, the standard deviation was 0.171 and the linear correlation coefficient was 0.9994.