节点文献
在硫酸铵存在下用四丁基溴化胺-水体系萃取分离汞
Study on the aqueous-two-phase extraction separation of Hg（Ⅱ） with tetrabutylammonium bromide-（NH4）2SO4 system
【Author】 Wu Yanping1*,Lv Pengfei2, Lu Weiqi1 Xv Hong1 (1 Department of Chemistry, Foshan University, Foshan 528000, Chian; 2 PingDingShan Institute Technology, PingDingShan 467001, china)
【机构】 佛山科学技术学院理学院； 平顶山工学院环境工程系；
【Abstract】 The behavior and conditions of extraction separation for mercury II aqueous-two-phase system of tetrabutylammonium bromide-(NH4)2SO4 mixture were studied. In the presence of ammonium sulphate , transparent two-phase system is prepared by mixting TBAB and (NH4)2SO4, TBAB concentration in upper phase is much higher than that of bottom solution. The results showed that Hg(II) is selectively extracted into the upper phase and the percentage of extraction(E%) of Hg(II) is highest in the pH<6, the E% of Zn2+、Cu2+、Ni2+、Co2+、Mn2+、Fe3+ is lowest.The quantitative extraction separation of Zn2+、Cu2+、Ni2+、Co2+、Mn2+、Fe3+ were achieved by controlling the acidity of the solution.The method is simple and the results are satisfactory.This method can be applied to the concentration separation for mercury.
【Key words】 Mercury； liquid-liquid extraction system； tetrabutylammonium bromide； (NH4)2SO4；
- 【会议录名称】 中国化学会第二十五届学术年会论文摘要集（下册）
- 【会议名称】中国化学会第二十五届学术年会
- 【会议时间】2006-07
- 【会议地点】中国吉林长春
- 【分类号】O658.2
- 【主办单位】中国化学会