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研究了聚乙二醇2000-吐温80混合聚合物水溶液在(NH_4)_2SO_4存在下分成液-固两相的条件和水溶性螫合剂及金属离子螫合物在两相间的分配行为,实现了Zr(Ⅳ)-Sc(Ⅲ)、Fe(Ⅲ)-Sc(Ⅲ)的定量萃取分离,初步探讨了混合聚合物相的萃取机理。
The conditions for the separation of polyethylene glycol 2000-Tween 80 polymer solution into liquid-solid phases in the presence of (NH 4) 2 SO 4 and the partitioning behavior of water-soluble chelating agents and metal ion complexes between the two phases were investigated. Zr (Ⅳ) -Sc (Ⅲ) and Fe (Ⅲ) -Sc (Ⅲ). The extraction mechanism of the mixed polymer phase was discussed preliminarily.