Abstract
Separation of zinc from aluminium by use of anion exchanger has been reported by Miller and Hunter, and Rush and Yoe. These methods have been applied by the writers on the determination of zinc in aluminium alloys. The result indicated that zinc in about 2N HCl was adsorbed in Amberlite IRA-410 (Cl-form) and it was liberated completely by 0.1N HNO3, then zinc was determined by EDTA method. When the alloy contained large amount of lead and silicon, those were removed by evaporating with sulfuric acid, diluting, filtering and SO--4 was removed by passing through Amberlite IR-120 (NH4-form), then the effluent by 2N HCl was used for the determination of zinc by the above method. An addition of a small amount of nonionic surfectant to the sample solution or washing solution enabled smooth operation.
