在水溶液中Ru(Ⅲ)与硫氰酸铵、结晶紫形成不溶于水的三元缔合物,在少量氯化钠存在下,此三元缔合物沉淀浮于盐水相上层形成界面清晰的液-固两相.当溶液中氯化钠、硫氰酸铵、结晶紫的质量浓度分别为50 g·L-1、0.04 mol·L-1、2.5×10-4mol·L-1,pH 4.0时,Ru(Ⅲ)被定量浮选.Rh(Ⅲ)、Mn(Ⅱ)、Al(Ⅲ)、Ni(Ⅱ)、Cr(Ⅲ)、Cd(Ⅱ)、V(Ⅴ)、Fe(Ⅱ)离子在该体系中不被浮选,实现了Ru(Ⅲ)与这些离子的定量分离,对合成水样和纯镍中钌进行定量浮选分离测定.

In an acetate buffer of pH 4.0,a water insoluble ternary association complex was formed among Ru(Ⅲ) crystal violet(CV) and ammonium thiocyanate in the presence of definite amount of sodium chloride,and the precipitate was floated above the aqueous phase giving a clear interface between liquid and solid phases.Quantitative floation of Ru(Ⅲ) was achieved when the concentration of NaCl,NH4SCN and crystal violet attained to the following values respectively: 50 g·L-1,0.04 mol·L-1 and 2.5×10-4mol·L-1.Ruthenium(Ⅲ) was separated satisfactorily from Rh(Ⅲ),Mn(Ⅱ),Al(Ⅲ),Ni(Ⅱ),Cr(Ⅲ),Cd(Ⅱ),V(Ⅴ) and Fe(Ⅱ),by this method,as the later elements were not floated by the reaction system mentioned above.The proposed method has been applied to the analysis of water and pure nickel.