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

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.