Determination of certain trace impurities in uranium concentrates by activation analysis.
A method is presented for the simultaneous determination of chromium, iron, cobalt and zinc in samples of uranium concentrates, oxides and metallic uranium by neutron-activation analysis. The method involves adequate decontamination of gross fission product activities by adsorption on silica gel, removal of uranium by solvent extraction, separation of most carrier-free rare-earth activities by coprecipitation with aluminium chloride, and, finally, fractional separation of the elements concerned by ion-exchange chromatography. The method can assay ppm of such elements in limited quantities of samples by scintillation gamma-ray spectrometric analysis with a reproducibility of 10-15%.
Abdel-Rassoul
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AA
Nuclear Chemistry Department, Atomic Energy Establishment Inchass, U.A.R.
Wahba
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SS
Abdel-Aziz
A
A