PSO+P_(350)二元中性体系对金(Ⅲ)的协同萃取研究

Concerted extraction for gold with a neutral binary system petroleum (PSO) plus di(l-methylheptyl)methylphosphonate(P_(350))

本文研究了石油亚砜(PSO)与甲基膦酸二甲庚脂(P_(350))组成的二元中性体系(B—B体系)在盐酸介质中对金(Ⅲ)的萃取行为,发现该体系确有明显的协同萃取效应.用斜率法和红外、紫外光谱法确定了协萃配合物的组成为[PSO·H·P_(350)]^+·AuCl_4^-.对协萃反应机理和可能的结构进行了讨论.

An investigation was given to the gold extraction behaviour of a neutral binary system PSO and P350 in a medium of hydrochloride. This system showed clear and definite effect of concerted extraction. The composition of complex acting upon the concerted extraction was determined to be [PSO·H·P350]+AuCl4 by infrared and ultraviolet spectroscopy and slope method. Its mechanism and possible structure were also discussed.