α-Isonitroso-2-acetonaphthone as a Reagent for the Microdetermination of Palladium by Solvent Extraction

Abstract

A highly simple, sensitive and selective method of determination of palladium in trace amounts is developed which is based on the reaction of α-isonitroso-2-acetonaphthone with the metal ion. The colored complex formed is quantitatively extractable into chloroform, whose λ_max lies at 430nm. The procedure eliminates the interference of several metal ions, especially the other platinum metals which adversely affect most of the determination methods of palladium. It obeys Beer′s law in the range of 0-4μgPd/ml with a Sandell′s sensitivity of 0.0026μgPd cm^-2.