Recebido em 9/5/07; aceito em 24/11/07; publicado na web em 8/7/08 DETERMINATION OF PALLADIUM IN BIOLOGICAL SAMPLES APPLYING NUCLEAR ANALYTICAL TECHNIQUES. This study presents Pd determinations in bovine tissue samples containing palladium prepared in the laboratory, and CCQM-P63 automotive catalyst materials of the Proficiency Test, using instrumental thermal and epithermal neutron activation analysis and energy dispersive X-ray fluorescence techniques. Solvent extraction and solid phase extraction procedures were also applied to separate Pd from interfering elements before the irradiation in the nuclear reactor. The results obtained by different techniques were compared against each other to examine sensitivity, precision and accuracy.
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