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[目的]建立在同一液相色谱条件下测定混配制剂中2甲4氯钠、莠灭净和敌草隆含量的分析方法。[方法]采用C18柱,用乙腈-水(0.1 mol/L KH2PO4,体积比40∶60)为流动相,检测波长为210 nm,外标法定量。[结果]2甲4氯钠、莠灭净和敌草隆的线性相关系数分别为0.9997、0.9995、0.9998;标准偏差分别为0.19、0.25、0.22;变异系数分别为1.81%、0.60%、0.94%;平均回收率分别为100.0%、100.1%、99.9%。[结论]在同柱同操作条件下分析73%甲.灭.敌草隆WP,简便、快速、稳定可靠,是一种较理想的分析方法。
[Objective] To establish an analytical method for the determination of 2-methyl-4-chloro-sodium, ametryn and diuron in the mixed formulation under the same liquid chromatographic conditions. [Method] With C18 column, the mobile phase was acetonitrile - water (0.1 mol / L KH2PO4, volume ratio 40:60). The detection wavelength was 210 nm. [Results] The linear correlation coefficients of 2, 4, 4, 5 and 9 were respectively 0.9997, 0.9995 and 0.9998, the standard deviations were 0.19, 0.25 and 0.22 respectively, and the coefficients of variation were 1.81%, 0.60% and 0.94% The average recoveries were 100.0%, 100.1% and 99.9% respectively. [Conclusion] The analysis of 73% methyl bromide and diuron diuron WP with the same operating conditions in the same column was simple, rapid, stable and reliable, and was an ideal analytical method.