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[方法]采用反相高效液相色谱法,使用C18柱和紫外检测器,以乙腈和磷酸溶液(体积比50∶50)为流动相,流速为1.0 mL/min,在233 nm波长下,对甲基二磺隆和甲基碘磺隆钠盐同时进行定量测定。[结果]甲基二磺隆和甲基碘磺隆钠盐的标准偏差分别为0.015和0.005,变异系数分别为1.49%和2.68%,平均回收率分别为99.8%和99.9%,线性关系分别为0.999 6和0.999 1。[结论]方法具有简便、快速、分离效果好、精密度和准确度高、线性关系好的优点,是较理想的分析方法。
[Method] The mobile phase consisted of acetonitrile and phosphoric acid (volume ratio 50:50) with C18 column and UV detector at a flow rate of 1.0 mL / min using reversed-phase high performance liquid chromatography with a wavelength of 233 nm Mesosulfuron and methyl iodosulfuron sodium salt simultaneously quantitative determination. [Results] The standard deviations of metsulfuron methyl and iodosulfuron methyl were 0.015 and 0.005 respectively, the coefficients of variation were 1.49% and 2.68%, respectively. The average recoveries were 99.8% and 99.9% respectively. The linear relationships were 0.999 6 and 0.999 1. [Conclusion] The method has the advantages of simple, rapid, good separation effect, high precision and accuracy, and good linearity. It is an ideal analytical method.