锑(Ⅴ)在乙醇-硫酸铵-罗丹明B体系中的绿色萃取分离和富集  

Study on green enrichment and extraction separation of Sb(Ⅴ) in ethanol-ammonium sulphate-rhodamine B system

作　　者：李玉玲[1] 宋世林[1] 马万山[1] 

机构地区：[1]信阳师范学院化学化工学院,信阳464000

出　　处：《分析试验室》2012年第11期54-57,共4页Chinese Journal of Analysis Laboratory

基　　金：河南省教育厅自然科学研究计划项目(2006150023)资助

摘　　要：研究了乙醇-(NH4)2SO4-罗丹明B(RhB)体系析相萃取Sb(Ⅴ)的行为及与一些金属离子分离的条件。结果表明,(NH4)2SO4能使乙醇的水溶液分成两相,在分相过程中,Sb(Ⅴ)与Cl-和RhB生成的[SbCl6-][RhB+]能被乙醇相完全萃取。当溶液中RhB、(NH4)2SO4和乙醇的质量浓度分别为0.4 mg/mL、0.3 g/mL和30%(V/V)时,Sb(Ⅴ)的萃取率达到98.6%以上,Fe3+、Pb2+、Ru3+、Cr3+、Co2+、Cu2+、Ag+、Mg2+和Ni2+基本不被萃取,实现了Sb(Ⅴ)与上述金属离子的分离。The behavior and conditions of extraction separation and enrichment of stibium from other metal ions in ethanol - ammonium sulphate-rhodamine B system were studied. The results showed that the ethanol-water solution could be well divided into two phases with the addition of ammonium sulphate. The associated [ SbCl6 - ] [ RhB ^＋ ] formed with SbC16 - and rhodamine B could be completely extracted during this process. Sb （ V ） could be quantiatively separated from Fe^3 ＋ , Pb^2 ＋ , Ru^3 ＋ , Cr^3 ＋ , Co^2 ＋, Cu^2 ＋ , Ag ^ ＋ , Mg^2 ＋ and Ni^2 ＋ by extraction, and values of extraction percentage of Sb （V） were over 98.6%. when the concentrations of rhodamine B, ammonium sulphate and ethanol in solution were 0. 4 mg/mL,0. 3 g/mL and 30 % （ V/V）, respectively.

关 键 词：锑(Ⅴ) 罗丹明B 乙醇 萃取分离 

分 类 号：O652.6[理学—分析化学]