硫酸铵-二溴对甲基偶氮羧磺-聚乙二醇-水体系浮选分离铅(Ⅱ)  

Floatation Separation of Lead(Ⅱ) via Ammonium Sulfate-Dibromo-p-methylcarboxy-sulfonazo-Polyglycol System

作　　者：樊月琴[1] 刘永文[1] 郭永[1] 孟双明[1] 常希俊[2] 丁秉钧[3] 

机构地区：[1]雁北师范学院化学系,大同037000 [2]兰州大学化学化工学院 [3]西安交通大学材料与工程学院

出　　处：《应用化学》2004年第12期1295-1299,共5页Chinese Journal of Applied Chemistry

基　　金：山西省自然科学基金资助项目

摘　　要：Pb(Ⅱ )与二溴对甲基偶氮羧磺、聚乙二醇生成缔合物沉淀 ,此沉淀可被定量浮选。实验表明 ,在pH =4 0的HAc NaAc介质中 ,有硫酸铵存在时 ,室温下 5min后可完成浮选 ,实现Pb(Ⅱ )与Fe(Ⅲ )、Cr(Ⅲ )、Al(Ⅲ )、Co(Ⅱ )、Ni(Ⅱ )、Cu(Ⅱ )、Zn(Ⅱ )、Mn(Ⅱ )、Cd(Ⅱ )和Hg(Ⅱ )等离子的完全分离。方法快速简便 ,具有较高的选择性。对合成水样中浮选分离Pb(Ⅱ ) 。Lead(Ⅱ) can form precipitate with dibromo-p-methylcarboxysulfonazo and polyglycol. This precipitate can be floated quantitatively. The experimental results show that in a HAc-NaAc medium(pH=4.0) with (NH 4) 2SO 4 present, lead(Ⅱ) can be completely separated by floatation from Fe(Ⅲ), Cr(Ⅲ), Al(Ⅲ), Co(Ⅱ), Ni(Ⅱ), Cu(Ⅱ), Zn(Ⅱ), Mn(Ⅱ), Cd(Ⅱ) and Hg(Ⅱ) within 5 min at room temperature. The great features of this method are simple, rapid and selective for lead(Ⅱ). It has been applied to the floatation of lead(Ⅱ) in synthetic water sample with satisfactory results.

关 键 词：铅(Ⅱ) 浮选分离 二溴对甲基偶氮羧磺(DBMCSA) 聚乙二醇(PEG2000) 硫酸铵 

分 类 号：O652.6[理学—分析化学]