Bestimmung von Palladium,Iridium und Platin in Silikatgesteinen durch Neutronenaktivierungsanalyse und chemische Abtrennung mit N,N′-Dibenzyl-Dithiooxamid |
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Authors: | K. Krogner |
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Affiliation: | (1) Zentralinstitut für Kernforschung, Rossendorf, 8051 Dresden, (DDR) |
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Abstract: | Palladium, iridium and platinum are determined by neutron activation and chemical separation via109Pd,192Ir and197Pt. Palladium(II) reacts immediately with N, N-Dibenzyldithiooxamide, Pt(IV) after addition of SnCl2 and Ir only upon heating in the presence of I. Palladium and platinum are separated together and measured simultaneously on a Ge-X-ray-detector. The chemical yields are determined by spectrophotometry of the extracted complexes. For samples of 0.2g the detection limits amount to 0.02 ppb Pd, 0.5 ppb Pt and 0.002 ppb Ir. |
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