结晶紫-H_2O体系浮选分离Au(SCN)_4^-  

Floatation Separation of Au(SCN)_4^- with Crystal Violet-H_2O System

作　　者：翟秋阁[1] 司学芝[2] 张灵霞[1] 马万山[1] 

机构地区：[1]信阳师范学院化学化工学院,河南省信阳市长安路237号464000 [2]河南工业大学化学化工学院,郑州市450052

出　　处：《光谱实验室》2011年第3期1158-1161,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：河南省教育厅自然科学研究计划项目(2006150023)

摘　　要：研究了结晶紫-H2O体系浮选分离A u(SCN)4-的行为及与一些金属离子分离的条件。结果表明,在水溶液中,Au(Ⅲ)与结晶紫(CV)和硫氰酸铵形成不溶于水的三元缔合物A u(SCN)4-.CV+,此三元缔合物沉淀浮于水相上层形成界面清晰的液-固两相。当溶液中结晶紫和硫氰酸铵的浓度分别为7.0×1-0 4m ol/L和5.0×1-0 3mol/L时,Au(Ⅲ)可与R h(Ⅲ)、G a(Ⅲ)、Mn(Ⅱ)、A l(Ⅲ)、Ni(Ⅱ)、Cd(Ⅱ)、F e(Ⅱ)、Mg(Ⅱ)和Sn(Ⅳ)离子分离。该方法具有简便、快速和不污染环境等特点,在微量金的分离和富集分析中有一定的实用价值。The behavior and conditions for the floatation separation of Au（SCN）-4 from other metal ions were investigated by crystal violet-H2O system.The results showed that Au（Ⅲ） combined with crystal violet and NH4SCN into a water-fast ternary associatedmatter Au（SCN）-4·CV＋ in the aqueous solutions,that was floated well on the surface of water phase,and which made the system divide into liquid and sold phases with a distinct boundary layer.Au（Ⅲ） could be quantitatively separated from Rh（Ⅲ）,Ga（Ⅲ）,Mn（Ⅱ）,Al（Ⅲ）,Ni（Ⅱ）,Cd（Ⅱ）,Fe（Ⅱ）,Mg（Ⅱ） and Sn（Ⅳ） by floatation when the concentrations of crystal violet and NH4SCN in solution were 7.0×10-4mol/L and 5.0×10-3mol/L,respectively.This method is easy,rapid and pollution-free environment,and certain practical value is expected in separation and enrichment analysis of trace gold.

关 键 词：Au(Ⅲ) 结晶紫 硫氰酸铵 浮选分离 

分 类 号：O652.6[理学—分析化学] O657.32[理学—化学]