中文摘要：

合成了吡虫啉原药中的主要杂质——1，3-双[1-（6-氯-3-吡啶基甲基）-N-硝基亚咪唑烷-2-基胺]（BPMNA），并建立了BPMNA的高效液相色谱定量分析方法。结果表明：在质量浓度为0．5～25mg／L范围内，BPMNA的质量浓度与峰面积之间呈良好的线性关系，决定系数（R。）为0．9997，方法检出限（LOD）为0．01mg／L，定量限（LOQ）为0．1mg／L，5次平行测定的相对标准偏差（RSD）小于1．0％，在8．24、12．36和16．48mg／L3个添加水平下，以吡虫啉标样为基质的添加回收率在99％～101％之间。该方法简单实用，可直接应用于商品化吡虫啉原药和制剂中BPMNA的含量检测。

英文摘要：

The major impurity of imidacloprid technical material named 1, 3-bis-[ （6-chloro-3- pyridylmethyl）-N-nitroimidazolidin-2-ylideneamine3 （BPMNA） was synthesized and a rapid high performance liquid chromatography （HPLC） analytical method for BPMNA has been established. The results showed that the regression of the peak area of BPMNA on the concentration well fitted a linear relationship（ RE --0. 999 7 ） at the concentration levels ranging from 0.5 to 25.0 mg/L. The LOD and LOQ were 0.01 and 0.1 mg/L, respectively. The relative standard deviations （RSD） for 5 parallel determinations were less than 1.0%. Standard additions of BPMNA to imidacloprid standard as matrix lead to excellent recoveries of 99% - 101%. The method presented here stands out as simple and easily applicable, which can be applied directly to commercial imidacloprid formulations to provide a rapid and efficient quality control.