聚乙烯醇缩对甲酰基苯偶氮变色酸析相液-固萃取镍的研究

Study on LiquidSolid Extraction of Nickel Using Polyvinyl Alcohol Condensed pFormylbenzenylazo Chromotropic Acid as Extraction Developer

报道了高分子显色剂聚乙烯醇缩对甲酰基苯偶氮变色酸（简称：ＰＶ·ＢＣｐＦ）做萃取剂时，Ｎｉ２＋等常见过渡金属离子的非有机溶剂液－固萃取行为和影响萃取的各种因素，特别是对高分子显色剂的结构与分析性能的关系做了系统比较研究，并对萃取机理作了初步探讨。实现了Ｎｉ２＋与常见过渡金属离子定量分离，分离系数Ｓｆ在６．０×１０２～５．０×１０３之间，常见离子不干扰。

n Tween 80inorganic salt water system the liquidsolid extraction behavior of the complexes of nickel (II) with the polymeric chromogenic reagent polyvinyl alcohol condensed pformylbenzenylazo chromotropic acid(PVBCpF) was investigated . Under certain experimental conditions, nickel can be quantitatively separated from other metals and the results of recovery are also satisfactory, the separation coefficient is between 6.010250103. The proposed method has been applied to the determination of nickel in aluminium alloys and environmental samples with satisfactory results.