Abstract
The separation of lanthanum from calcium and a number of radioisotopes of other elements by extraction with alkylphosphoric acids and tri-n-butylphosphate has been studied. A quantitative method has been developed for the separation of a lanthanum tracer from neutron-irradiated preparations on a calcium carrier, obtained from the steel-making process. This method improves the detectability of140La (from 5·10−7 to 10−10 g of La) by γ-ray spectrometry with a scintillation counter, and enables semiquantitative determination of lanthanum with a liquid GM tube, the error involved being about 100% for La contents >10−8 g, and about 30% for La contents >10−7 g.
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Urbański, T.S. Extractive separation of a lanthanum tracer from preparations on a calcium carrier obtained from steel samples. J. Radioanal. Chem. 22, 13–19 (1974). https://doi.org/10.1007/BF02518088
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DOI: https://doi.org/10.1007/BF02518088