胶束电动毛细管色谱测定废水中苯胺类化合物

Determination of Aniline Derivatives in Waste Water With Micellar Electrokinetic Capillary Chromatography

采用ＭＥＣＣ技术分离了环境毒物７种苯胺类化合物，考察了十二烷基硫酸钠 （ＳＤＳ）溶液对分离的影响以及影响迁移时间和峰面积重现性的因素。各化合物迁移时间的相 对标准偏差ＲＳＤ<０．５％，峰面积ＲＳＤ＜３．０％。在所测试的浓度范围内，具有很好的线性标 准曲线，苯胺化合物的最小检测量从０．８２×１０－１２ｇ到２．６１×１０－１２ｇ。将此法应用于废水中苯 胺类化合物的测定，结果令人满意。

A micellar electrokinetic capillary chromatography method (MECC) for the deter- mination of aniline derivatives in waste water was described. The effect of sodium dodecyl sulfate on the separation and factors influencing the repeatability of migration time and peak area were investigated. The RSD of migration time was less than 0. 5% and that of peak area was less than 3. 0%. The minimum detectable quantities of aniline derivatives varied from 0. 82*10-12 g to 2. 61×10-12 g. The method is simple, rapid and accurate.