Ion-exchange preconcentration and separation of trace amounts of platinum and palladium

The preconcentration and separation of platinum and palladium from weakly a cidic solution (pH=4) were done on microcolumn packed with Cellex-T resin. Selective platinum elution from the column was performed with 0.01 mol/l gl ycine solution at pH=12, while for palladium elution 1.2 mol/l thiourea (pH =0.5) or 4.0 mol/l potassium thiocyanate (pH=1) may be used. As the detecti on technique was used either FAAS or GFAAS, depending on the concentration of studied metals in the eluate.