ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Determination of Palladium Traces by Differential Pulse Polarography after Preconcentration by Extraction with Quaternary Ammonium Salts

P. Tarapčík and M. Vaníčková

Department of Analytical Chemistry, Faculty of Chemical Technology, Slovak Technical University, CS-812 37 Bratislava

Abstract: The samples with the complicated matrix containing organic substances have to be mineralized by wet combustion in the mixture of acids. Palladium is then extracted from the HCl medium with quaternary ammonium salts into toluene and reextracted by alkaline NH₄NO₃ solution which is the base electrolyte for polarographic determination. During the adjustment of the sample the preconcentration of palladium takes place. The determination limit is 2.5 μg dm^-3 in 100 cm³ of the sample. The determination is practically selective with respect to other metals, the determination limit is worsened only by the presence of cadmium.

Full paper in Portable Document Format: 465a293.pdf

Chemical Papers 46 (5) 293–296 (1992)