铜（Ⅱ）、锌（Ⅱ）、镍（Ⅱ）、铁（Ⅲ）、铝（Ⅲ）萃取分离研究──聚乙二醇—硫酸铵—偶氮胂Ⅲ体系

Studies on the Extraction Separations of Copper(Ⅱ),Zinc(Ⅱ),Nickel(Ⅱ),Iron (Ⅲ)and Aluminum(Ⅲ)-Polyethylene Glycol-Ammonium Sulfate-Arsenazo ⅢSystms

本文用偶氮胂Ⅲ作萃取剂，深讨了在聚乙二醇（ＰＥＧ）－硫酸铵－偶氮胂Ⅲｗ体系中Ｃｕ（Ⅱ）、Ｚｎ（Ⅱ）、Ｎｉ（Ⅱ）、Ｆｅ（Ⅲ）、Ａｌ（Ⅲ）的非有机溶剂萃取分离行为．在一定条件下，Ｆｅ（－Ⅱ）、Ａｌ（Ⅲ）几乎可被ＰＥＧ相完全萃取，而Ｃｕ（Ⅱ）、Ｎｉ（Ⅱ）不被萃取．从而获得了Ｆｅ（Ⅱ）－Ｃｕ（Ⅱ）、Ｆｅ（Ⅲ）Ｎｉ（Ⅱ）、Ｆｅ（Ⅲ）－Ｚｎ（Ⅱ）、Ａｌ（Ⅲ）－Ｚｎ（Ⅱ）及Ｆｅ（Ⅲ）－Ｃｕ（Ⅱ）、Ｚｎ（Ⅱ）、Ｎｉ（Ⅱ）混合离子的定量分离，结果满意．

In polyethylene glycol-Ammonium sulfate-ArsenazoIII systmes extracion separations behaviour of the complexes of Cu(Ⅱ),Zn(Ⅱ),Ni(Ⅱ),Fe(Ⅲ)and Al(Ⅲ) with Arsenazo Ⅲwas investingated by using ArsenazoIII as extractant.Under the selected experimental condition,that complexes of Fe(Ⅲ),Al(Ⅲ)with ArsenazoIII have been almostly extracted by PEG phase while Cu(Ⅱ),Zn(Ⅱ)and Ni(Ⅱ)have been not extracted.So that mixed ions quantitaively separated for Fe(Ⅲ)-Cu(Ⅱ),Fe(Ⅲ)-Zn(Ⅱ),Fe(Ⅲ)-Ni(Ⅱ),Al(Ⅲ)-Zn(Ⅱ)and Fe(Ⅲ)-Cu(Ⅱ),Zn(Ⅱ),Ni(Ⅱ) with satisfactory results.