摘要
利用水溶性高聚物在无机盐存在下可分成两相的特点,实现了碱性条件下,聚乙二醇-4000对水样中的苯胺的定量萃取.在pH=11.5溶液中,苯胺与8-羟基喹啉形成偶氮化合物,应用分光光度法对其含量定量测定(ε=2.4×104L·mol-1·cm-1).该方法快速、简单、无毒、干扰小,苯胺含量在0.12～2.0mg L符合比耳定律,回收率95%～105%,为水样中苯胺的测定提供了一种较好的方法.
In the base solution, Polyglycol-4000 can extract the aromatic aminefor water sample according to the rule that the water-soluble highpolymer can be separated into two layers when the inorganic salt lies in it.In the solution of pH=10.5,the aromatic amine can take the shape of colored matter and can be quanta determined. It is quick,reliable and easy to deal with.The Beer Law is valid in the range of 0.12～2.0 mg/L. The rate of recovery is 95～105%. And the molar absorption coefficient is 2.4×10~4L·mol^(-1)·cm^(-1).
出处
《湛江师范学院学报》
2003年第6期42-45,共4页
Journal of Zhanjiang Normal College
基金
湛江师范学院重点科研资助项目(Z0220).
