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This paper reports a simple and highly selective method for preconcentrating and separating of trace Pd(II) and Pt(IV) with silica gel bonded by aminopropyl-benzoylazo-4-(2-pyridy-lazo)-resorcinol (ABPR-SG). ABPR-SG is stable in solution from 6 mol/L HCl to pH 7.0 and in common organic solvents. The maximum adsorptive capacity of Pd(n) on ABPR-SG is 362 μmol/g. After preconcentration and separation by using ABPR-SG column, Pd(II) and Pt(IV) of μg/L level in artificial water samples can be measured reliably by common spedrophotometry. The maximum concentration factors of Pd(II) and Pt(IV) on ABPR-SG column are 143 and 125 respectively. The chromatographic column packed with ABPR-SG can be reused. The method is simple and efficient.
This paper reports a simple and highly selective method for preconcentrating and separating of trace Pd (II) and Pt (IV) with silica gel bonded by aminopropyl-benzoylazo-4- (2-pyridylazo) -resorcinol (ABPR-SG). ABPR-SG is stable in solution from 6 mol / L HCl to pH 7.0 and in common organic solvents. The maximum adsorption capacity of Pd (n) on ABPR-SG is 362 μmol / g. After preconcentration and separation by using ABPR-SG The maximum concentration of elements Pd (II) and Pt (IV) on ABPR-SG columns are 143 and 125 respectively. The chromatographic column packed with ABPR-SG can be reused. The method is simple and efficient.