摘要
本文研究了PEG—EBT—(NH_4)_2SO_4体系对Cu(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Zn(Ⅱ)、Cd(Ⅱ)的非有机溶剂萃取行为。指出在pH7~10(NH_3H_2O~NH_3Cl)的水溶液中,有(NH_4)_2SO_4存在下,Cu(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Zn(Ⅱ)可被PEG相几乎完全萃取,而Cd(Ⅱ)基本上不被萃取。从而获得了(d(Ⅱ)与Cu(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Zn(Ⅱ)混合离子的定量分离。
In PEG-EBT- (NH4) 2SO4 system the liquid-liquid extraction belavicur of Cu(II),Co(II),Ni( II ),Zn( II )andCd( II )withoutusualorganicsolventswasinvesti-gated, we found that.Cu( II ), Co( II ), Ni( II ),Zn( II ) were almost extracted by PEG phase while Cd( II ) was not extracted in thd water solutions of NH4 H2O-NH4Cl(pH = 7~10) and (NH4) 2SO4, So that Cd( I ) was quantiatative separated from mixed solutions of Cu( II ),Co( II ),Ni(II),Zn(II).Cd(II)ions.
出处
《淮北煤师院学报(自然科学版)》
1994年第4期38-41,共4页
Journal of Huaibei Teachers College(Natural Sciences Edition)
关键词
萃取
铜
钴
镍
溶剂
锌
extraction
polyethylene glytol
eriorchrome
black T