研究了石油亚砜PSO3e萃取Au3+时，萃取剂浓度、盐酸浓度对萃取率的影响。实验结果表明，在实验条件下，金的萃取率随着PSO3e的浓度和HCl的浓度增加而增加。还通过研究其它因素如Au3+、Cl-、H+、PSO3e的浓度对分配系数的影响，确定萃合物的组成为HAuCl4*3PSO*mH2O。此外，根据红外光谱研究萃取物的成键情况，得出PSO3e萃取Au3+的机理为酸性缔合机理：H+3PSO(o)+mH2O+AuCl4-〔H*3PSO*mH2O*AuCl4〕(o)。
The influence of the concentration of the extractant PSO3e and medium HCl on the extraction rate of Au3+ was studied in this paper.The experiment results show that the extracting rate of Au3+ increased along with the increase of PSO3e and HCl concentration under experiment conditions.The composition of extracted compound was deduced from the studies of other factors,such as the concentration of Au3+,Cl-,H+ and PSO3e,which affected the distribution coefficient.It was HAuCl4*3PSO*mH2O.The mechanism of extracting Au3+ with PSO3e was also proposed here by studying their bonding condition with IR.The mechanism was H+3PSO(o)+mH2O+AuCl-〔H*3PSO*mH2O〕〔AuCl-4〕(o).
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