【摘要】 用亚胺基二乙酸（ＩＤＡ）修饰了聚乙二醇ＰＥＧ８０００，并构建了修饰聚合物－盐－水液－固亲和萃取体系，用于高选择性富集与分离金属离子。控制最佳分离条件，成相聚合物吐温８０浓度：５％～１０％；ＰＥＧ－（ＩＤＡ）２含量０．ｌ％；（ＮＨ４）２ＳＯ４浓度：１．１４～１．６７ ｍｏｌ／Ｌ；溶液酸度ｐＨ ３．２０～７．００．连续苹取分离了 Ｃｕ（Ⅱ）、Ｚｎ（Ⅱ）、Ｃｏ（Ⅱ）及Ｃｕ（Ⅱ）、Ｚｎ（Ⅱ）、Ｎｉ（Ⅱ），并探讨了该萃取体系的萃取机理。从水样、发样等多种样品中，成功地富集并测定了痕量Ｃｕ（Ⅱ）和Ｚｎ（Ⅱ），结果满意。更多还原

【Abstract】 The polyethylene glycol(PEG)S000 was modified with iminodiacetic acid(IDA). The polymer-salt-H2O liquid-solid affinity extraction system composed by Tween80 mixed PEG-(IDA)2 was used to selectively concentrate and separate metal ions. The quantitative continuous extraction of Cu(Ⅱ).Zn(Ⅱ).Co(Ⅱ)and Cu(Ⅱ). Zn(Ⅱ) . Ni(Ⅱ) were carried out by controlling the optimal conditions: The concentration of forming phase polymer Tween 80 was 5-10%; PEG-(IDA)2 concentration was 0.1%;(NH4)2SO4 concentration was 1.14-1.67 mol/L; the solution adity was pH 3.20-7.00. The extraction mechanism was discussed initially. The enriching of trace Cu(II) and Zn(II) from water and fair etc. was successfully achieved. The results are satisfactory.更多还原