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建立了用高效液相色谱法同时测定农药吡虫啉中间体 2 -氯 - 5-甲基吡啶和 2 -氯 - 5-氯甲基吡啶含量的方法。在此条件下 ,2 -氯 - 5-甲基吡啶、2 -氯 - 5-氯甲基吡啶以及杂质等均能较好分离。峰面积与浓度具有良好的线性关系 ,相关系数分别为 0 .9996和 0 .9997;平均回收率分别为 1 0 0 .0 %和 99.71 %。
A method for simultaneous determination of 2 - chloro - 5 - methylpyridine and 2 - chloro - 5 - chloromethylpyridine in pesticide imidacloprid by high performance liquid chromatography was established. Under these conditions, 2 - chloro - 5 - methylpyridine, 2 - chloro - 5 - chloromethyl pyridine and impurities were better separation. The peak area and concentration had a good linear relationship with correlation coefficients of 0.9996 and 0.9997, respectively. The average recoveries were 100.0% and 99.71%, respectively.