N,N′-二(十二烷基)乙二胺二乙酸萃取镉的研究  

Extraction of cadmium(Ⅱ)with a new reagent -N,N′-di(dodecyl) ethylenediamien-di-acetic acid

作　　者：杜巧云[1] 黄华鸣[1] 

机构地区：[1]洛阳师范学院化学系,河南洛阳471022

出　　处：《化学研究与应用》2003年第6期873-874,共2页Chemical Research and Application

摘　　要：Extraction behaviour of Cadmiun（Ⅱ） with a new trilon N,N′-di（dodecyl）ethylenediamien-di-acetic acid （H2R2Y） in chloroform was investigated.Complex ratio between H2R2Y and Cd2+ 1∶1 was substantiationed by conductance and mole ratio method.The influence of acidity,concentration of H2R2Y,phase-radio and temperature of extraction reaction was studied.The results indicated that:percentage extraction of Cd（Ⅱ） increased with the increase of the concentration of H2R2Y and the distribution ratio lgD decreased linearly with the increase of temperature.ΔHo=-7.254KJ·mol-1 for the extraction reaction.Extraction behaviour of Cadmiun(Ⅱ) with a new trilon N,N′-di(dodecyl)ethylenediamien-di-acetic acid (H_2R_2Y) in chloroform was investigated.Complex ratio between H_2R_2Y and Cd^(2+) 1∶1 was substantiationed by conductance and mole ratio method.The influence of acidity,concentration of H_2R_2Y,phase-radio and temperature of extraction reaction was studied.The results indicated that:percentage extraction of Cd(Ⅱ) increased with the increase of the concentration of H_2R_2Y and the distribution ratio lgD decreased linearly with the increase of temperature.ΔH^o=-7.254KJ·mol^(-1) for the extraction reaction.

关 键 词：N N’-二(十二烷基)乙二胺二乙酸 萃取 镉 氨羧络合剂 螯合物 废水处理 水污染 

分 类 号：X703[环境科学与工程—环境工程] X131.2