聚乙烯醇缩对甲酰基苯偶氮-8-羟基喹啉液-固萃取分离铟、铝的研究

Study on the Liquid Solid Extraction of Indium(Ⅲ) and Aluminum(Ⅲ) Using Polyvinyl Alcohol Condensed p Formylbenzazo 8 hydroxyquinoline as Extractant

报道了高分子显色剂聚乙烯醇缩对甲酰基苯偶氮８羟基喹啉（简称： Ｐ Ｖ· Ｈ Ｑｐ Ｆ）做萃取剂时，铟、铝的非有机溶剂液固萃取行为，并与相应的小分子试剂对甲酰基苯偶氮８羟基喹啉（简称： Ｈ Ｑｐ Ｆ）作比较。结果表明，在吐温－ ８０（ Ｔｗ ｅｅｎ８０）硫酸盐水体系中， Ｐ Ｖ· Ｈ Ｑｐ Ｆ做萃取剂比 Ｈ Ｑｐ Ｆ有高得多的萃取率；在一定的实验条件下，铟能被定量萃取，而铝不被萃取，从而实现了铟与铝的定量分离，分离系数 Ｓｆ为５．０×１０３；常见离子不干扰，加入实验的回收率在９２％ ～１０４％ 之间，结果较为满意。对液固萃取机理也做了初步探讨。

The liquind solid extraction behaviour of the indium(Ⅲ) and aluminum(Ⅲ) complexes with polymeric chromogenic reagent polyvinyl alcohol condensed p formylbenzazo 8 hydroxyquinoline(PV·HQpF) was reported;It was compared with the corresponding small molecule reagent (HQpF).As a result,the extraction rate is much higher in using PV·HQpF as the extractant than that of HQpF in Tween 80 inorganic salt(NH\-4)\-2SO\-4 water system.Under certain experimental conditions,In(Ⅲ) Al(Ⅲ) can be quantitatively separated in this system and the separation coefficient S\-f was 5.0×10 3.Common ions did not interfere,the percent recovery was between 92%~104%.The results are satisfactory.The mechanism of the extraction reaction was studied preliminarily.