Abstract
SummaryProduction of no carrier added105Rh by thermal neutron irradiation of natural Ru target and ist radiochemical separation to obtain radionuclidically and radiochemically pure species is described. Irradiation planning, post irradiation chemical separation of105Rh from ruthenium and irridium radionuclidic contaminants are discussed in detail. 100 mg of natural Ru was irradiated in a thermal neutron flux of 3 × 1013 neutrons/cm2/s for 7 days. Irradiated target was disolved in an mixture of KIO4and KOH in presence of water. Solvent extraction with CCI4was used for removal of97Ru and103Ru, whereas solvent extraction with TBP was used for the removal of traces of192Ir impurity. Different radiochemical separation techniques were tested for the recovery of105Ru and ist final purification from the accompanying radionuclidic impurities. The salts associated with the product were subsequently removed by fractional precipitation and by cation exchange chromatography. The radionuclidic purity of the105Rh separated was estimated by gamma ray spectrometry; no radionuclidic contamination was observed. The radiochemical purity of the105RhCI3was acsertained bx paper chromatography and paper electrophoresis. Production of no carrier added105Rh by thermal neutron irradiation of natural Ru target and ist radiochemical separation to obtain radionuclidically and radiochemically pure species is described. Irradiation planning, post irradiation chemical separation of105Rh from ruthenium and irridium radionuclidic contaminants are discussed in detail. 100 mg of natural Ru was irradiated in a thermal neutron flux of 3 x 1013 neutrons / cm2/ s for 7 days. Irradiated target was disolved in an mixture of KIO4and KOH in presence of water. Solvent extraction with CCI4was used for removal of97Ru and103Ru, whereas solvent extraction with TBP was used for the removal of traces of192Ir impurity. Different radiochemical separation techniques were tested for the recovery of105Ru and ist final purification from the accompanying radionuclidic impurities. The salts associated with the product were subsequently removed by fractional precipitation and by cation exchange chromatography. The radionuclidic purity of the105Rh separated was estimated by gamma ray spectrometry; no radionuclidic contamination was observed. The radiochemical purity of the105RhCI3was acsertained bx paper chromatography and paper electrophoresis.
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