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一、前言己内酰胺生产的转位液用氨水处理后分离出的硫酸铵溶液中尚溶解有少量的己内酰胺。这些己内酰胺的回收利用并进行准确的分析对提高产品的质量和收率均有一定的意义。文献报道,应用古典的重量分析法测定微量的己内酰胺可获得准确而可靠的数据,然而此法的测定时间太长(不少于5小时),同时因用有机溶剂(如氯仿等)萃取和蒸发,这对于环境和分析者的身体健康均会带来极大的危害,因而这种测定方法是不适宜于控制分
I. Introduction Precursor caprolactam production of transposition solution after treatment with ammonia solution is still dissolved in a small amount of caprolactam. The recovery of these caprolactam and accurate analysis of the product quality and yield are of some significance. It has been reported in the literature that accurate and reliable data can be obtained by classical gravimetric analysis of traces of caprolactam. However, the determination of this method takes too long (not less than 5 hours) and due to extraction and evaporation with organic solvents (eg chloroform) , Which will bring great harm to the environment and the health of the analyst. Therefore, this determination method is not suitable for control points