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本文研究了聚乙二醇(PEG)-(NH_4)_2SO_(4-)铬黑T(EBT)体系对Fe(Ⅲ)、CO(Ⅱ)Ni(Ⅱ)、Cu(Ⅱ)、Cd(Ⅱ)的非有机溶剂萃取行为.结果表明,在pH7~11的 NH_3·H_2O-NH_4Cl缓冲溶液中,Fe(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Cu(Ⅱ)可被聚乙二醇(PEG)相萃取,而Cd(Ⅱ)基本上不被萃取,从而获得了Cd(Ⅱ)与Fe(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Cu(Ⅱ)混合离子的定量分离.
In this paper, the effects of PEG - (NH_4) _2SO_ (4-) chrome black T (EBT) on Fe (Ⅲ), CO The results showed that Fe (Ⅱ), Co (Ⅱ), Ni (Ⅱ) and Cu (Ⅱ) could be adsorbed by polyethylene glycol in the NH_3 · H_2O-NH_4Cl buffer solution with pH7-11 (Ⅱ), Co (Ⅱ), Ni (Ⅱ) and Cu (Ⅱ) were obtained by the extraction of Cd (Ⅱ) and PEG (Ⅱ) while the extraction of Cd (Ⅱ)