二-n-己基硫醚萃取Au(Ⅲ)和Au(Ⅲ)的反萃

Extraction of Au(Ⅲ)by di-n-hexylsulfide and its back extraction

本文研究了二-n-己基硫醚的二甲苯溶液从盐酸介质小萃取Au(Ⅲ)的规律,提出了萃取机理,较满意解释了萃取过程及萃合物的组成。应用硫脲作反萃剂,可将萃至有机相中的Au(Ⅲ)反萃至水相,效果很好。

The extraction of Au(Ⅲ) from aqueous hydrochloric acid by a solution of di-n-hexylsulfide in xylene solvent was studied and a mechanism for this extraction was proposed. The mechanism of extraction could well explain the extraction process and constitution of extracted species. The extracted species of Au(Ⅲ) in organic phase could be easily and effectively back-extracted into aqueous phase by back extractant of thiourea.