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运用毛细管区带电泳法 ,通过在缓冲溶液中添加多阳离子化合物改变电渗流方向的方法 ,快速分离了 11种一取代、二取代和三取代硝基酚及 4种在德国常用的除草剂Bromoxynil,DNOC ,Dinoterb和Ioxynil。使用UV检测 ,这些化合物的检测限在 0 5mg/L～ 1 1mg/L。为满足环境样品分析的要求 ,使用固相萃取方法对样品进行了预处理 ,使硝基酚的检测限达到 1μg/L以下 ,并对实际样品进行了分析。
By capillary zone electrophoresis, eleven mono-, di- and trisubstituted nitrophenols and four commonly used herbicides Bromoxynil in Germany were rapidly separated by changing the direction of electroosmotic flow by adding polycationic compounds to the buffer solution. DNOC, Dinoterb and Ioxynil. Using UV detection, the detection limit of these compounds is between 0 5 mg / L and 1 1 mg / L. In order to meet the requirement of environmental sample analysis, the sample was pretreated by solid-phase extraction method, the detection limit of nitrophenol was below 1μg / L, and the actual samples were analyzed.