CAJ | 학술논문

研究了碘化钾-四丁基溴化铵-水体系浮选分离汞(Ⅱ)的行为及与一些金属离子分离的条件.在水溶液中汞(Ⅱ)与四丁基溴化铵和碘化钾形成不溶于水的三元缔合物,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.当溶液中四丁基溴化铵和碘化钾的浓度分别为6.0×10~(-4) mol/L和5.0×10~(-3) mol/L时,汞(Ⅱ)被定量浮选.而铈(Ⅲ)、镓(Ⅲ)、锆(Ⅳ)和铀(Ⅵ)在该体系中不被浮选,对合成水样进行分离和测定,效果良好.
연구료전화갑-사정기추화안-수체계부선분리홍(Ⅱ)적행위급여일사금속리자분리적조건.재수용액중홍(Ⅱ)여사정기추화안화전화갑형성불용우수적삼원체합물,차삼원체합물침정부우수상상층형성계면청석적액-고량상.당용액중사정기추화안화전화갑적농도분별위6.0×10~(-4) mol/L화5.0×10~(-3) mol/L시,홍(Ⅱ)피정량부선.이시(Ⅲ)、가(Ⅲ)、고(Ⅳ)화유(Ⅵ)재해체계중불피부선,대합성수양진행분리화측정,효과량호.
The behavior and conditions for the flotation separation of Hg(Ⅱ)with tetrabutyl ammonium bromide-KI system from other metallic ions were investigated.Hg(Ⅱ)combines with tetrabutyl ammonium bromide and KI into a ternary ion association precipitate[HgI_4][TBAB]_2.The precipitate floated on the surface of water with a distinct boundary layer between liquid and solid phase.Hg(Ⅱ)could be quantitatively separated from Ce(Ⅲ),Ga(Ⅲ),Zr(Ⅳ)and U(Ⅵ)when tetrabutyl ammonium bromide and KI were 6.0×10~(-4) mol/L and 5.0×10~(-3) mol/L,respectively.And it was used for the floatation separation and determination of Hg(Ⅱ)in the sample of synthetic water with floatation rate of Hg(Ⅱ)was higher than 99.3%,and other metallic ions is less than 1.7%.The method is practical for the separation and enrichment of trace mercury.