DETERMINATION OF MICROGRAM AMOUNTS OF PALLADIUM IN TITANIUM-ALLOYS BY X-RAY-FLUORESCENCE SPECTROMETRY AFTER SOLVENT-EXTRACTION AND COLLECTION ON A FILTER-PAPER

Palladium is separated from large amounts of titanium matrix and other elements by solvent extraction with diethyldithiocarbamate, and is collected into the small central area on a filter paper for subsequent x-ray fluorescence measurement. The palladium diethyldithiocarbamate chelate is extracted quantitatively into chloroform at pH 9.5 in the presence of large amounts of tartrate and EDTA. Palladium in the range 30-100 μg can be determined with coefficients of variation of 0-6-1.4%. The detection limit is 0.3 μg of palladium; up to 500 μg of copper does not interfere. © 1979.