Abstract
A new procedure for the radiochemical measurements of thorium, uranium and plutonium in atmospheric samples is described. Analysis involves coprecipitation of these actinides with iron hydroxide from a 40-to 50-dm3 sample of rainwater, followed by radiochemical separation and purification procedures by the use of ion exchange chromatography (Dowex AG1×8) and solvent extraction. The new procedure enables one to determine the isotopes of thorium, uranium and plutonium, which are found in rainwater at extremely low concentrations, with a chemical yield ranging from 60 to 80%.
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Jiang, F.S., Lee, S.C., Bakhtiar, S.N. et al. Determination of thorium, uranium and plutonium isotopes in atmospheric samples. Journal of Radioanalytical and Nuclear Chemistry, Articles 100, 65–72 (1986). https://doi.org/10.1007/BF02036500
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DOI: https://doi.org/10.1007/BF02036500