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研究磷酸三丁酯(TBP)与三苯基氧膦(TPPO)组成的二元中性体系(B—B)从HCl介质中对Au(Ⅲ)的萃取,发现该体系对金有明显的协萃效应。用斜率法和紫外光谱法确定协萃络合物的组成,求出协萃反应的平衡常数,还讨论协萃络合物的可能结构和反应机理。
The binary system (B-B) consisting of tributyl phosphate (TBP) and triphenylphosphine oxide (TPPO) was used to extract Au (Ⅲ) from HCl medium. Extract effect. The composition of the complexing complex was determined by slope method and UV spectrophotometry. The equilibrium constant of the complexing reaction was determined. The possible structure and reaction mechanism of the complexing complex were also discussed.