二(2—乙基已基)硫醚对金(Ⅲ)的萃取

Extraction of Gold(Ⅲ) with Di (2-ethylhexyl ) Thioether

用斜率法、等摩尔系列法和饱和法测得二（2—乙基已基）硫酸（DEHS）与金（Ⅲ）的萃合物组成，讨论了水相氢离子浓度、氯离子浓度，萃取剂浓度和温度等多种因素对草金的影响。紫外光谱表明草合物中已不存在AUCl4，萃取过程属配体取代反应。

篢he composition of extracted complex of gold (Ⅲ) with di (2-ethylhexyl) thioether (DEHS) is determined by the methods of slopes, Job's and isotherms. The extraction of gold (Ⅲ) has been studied in various conditions, such as concentrations of hydrogen ion, chlorine ion and extractant, and temperature etc. It is discovered by an ultraviolet spectra that there is no AuCl4 in extracted species. It is proposed that the extraction reaction be a substitute mechanlsm one.