以季胺盐萃取光度法测定微量碲的研究

Determination of Trace-tellurium by Spectrophotometric Method Using Quarternary Ammonium Salt as Extractive Agent

本文在氢溴酸介质中 ,以氯化三辛基甲胺 (以下简称TOMA CL)的二甲苯溶液为萃取剂 ,详细研究了微量碲的萃取分离和测定条件。在同一试液中 ,经两步萃取 ,分离后 ,用光度法测定样品中微量碲。此方法简便。仪器简单 ,实用性强 ,易于推广 ,选择性好 。

Using dimethylbenzene solution of TOMA.CL as extraction agcnt,the conditions of extraction and determination of trace-tellurium in hydrobromic acid medium were studied.By spectrophotometric method,after twice extraction,the trace-tellurium in the same sample was determined.Results showed that this method was simple and effective with higher sensitivity and selection.