表面活性剂体系萃取分离贵金属离子的研究  

Study on the extraction separation of precious metal ions in surfactant system

作　　者：朱霞石[1] 包莉[1] 郭荣[1] 马湘怡[1] 

机构地区：[1]扬州大学化学化工学院,扬州225002

出　　处：《分析试验室》2004年第11期59-61,共3页Chinese Journal of Analysis Laboratory

摘　　要：研究了在TritonX 100 (NH4)2SO4 络合剂体系中,贵金属离子的萃取分离行为。考察了金属络合物的液 液两相间的分配行为及影响络合物萃取行为的各种因素,优化了萃取分离条件。实验结果表明,在pH7.0～7.5的溶液中,络合剂PAR能与Pd(Ⅱ)形成稳定的络合物,可被定量萃取,实现了Pd(Ⅱ)与Pt(Ⅵ)、Ir(Ⅵ)、Mo(Ⅵ)等混合离子间的定量分离。混合离子分离中,Pd(Ⅱ)的回收率为97.5%～100.8%。Tritionx X-100-PAR-(NH_4)_2SO_4 system the extraction separation behaviour of the complexes Pd(Ⅱ), Pt(Ⅳ), Ir(Ⅳ) and Mo(Ⅵ) between the two phases was investigated. The results showed that the complex of Pd(Ⅱ) with PAR was almost completely extracted by Triton X-100 phase, while Pt(Ⅳ), Ir(Ⅳ) and Mo(Ⅵ) were not extracted from the aqueous solution of pH 7.0～7.5. So Pd(Ⅱ) was quantilitively separated from the mixed solution of Pt(Ⅳ), Ir(Ⅳ) and Mo(Ⅵ). The recovery of Pd(Ⅱ) was 97.5%～100.8%.

关 键 词：TRITON X-100 硫酸铵 贵金属离子 分离 光度法 

分 类 号：O652.62[理学—分析化学]