H_2R_2Y/氯仿系统萃取铅的研究  

Study on extraction of lead(Ⅱ) using H_2R_2Y-CHCl_3

作　　者：杜巧云[1] 王建革[1] 张桂英[1] 吴军宝[1] 

机构地区：[1]洛阳师范学院化学系,河南洛阳471022

出　　处：《化学试剂》2005年第6期358-360,共3页Chemical Reagents

摘　　要：研究了N ,N′- 二(十二烷基)乙二胺二乙酸(H2 R2 Y)的氯仿溶液对铅(Ⅱ)的萃取行为。考察了酸度、萃取剂浓度、相比及温度等因素对萃取率的影响;用电导法及摩尔比法测得萃合物的物质的量比为1∶1。结果表明,在pH 6左右有很高的萃取率。Extraction behaviour of Pb(Ⅱ)with a new trilon N,N′ -di(dodecyl) ethylenediamine-di-acetic acid(H_2R_2Y)in chloroform has been investigated.The influence of acidity,concentration of H_2R_2Y,phase-radio and temperature of extraction has been studied;the complex ratio between H_2R_2Y and Pb 2+ (1∶1)was determined by conductance and molar ratio method.The results indicated that:percentage extraction of Pb 2+ was increased with the increase of concentration of H_2R_2Y and which was quite high at pH 6.

关 键 词：N N-二(十二烷基)乙二胺二乙酸 萃取 螯合物 铅 

分 类 号：O652.62[理学—分析化学]