Fractionation of plutonium in environmental and bio-shielding concrete samples using dynamic sequential extraction |
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Authors: | Jixin Qiao |
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Institution: | Radiation Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark, DK-4000 Roskilde, Denmark |
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Abstract: | Fractionation of plutonium isotopes (238Pu, 239,240Pu) in environmental samples (i.e. soil and sediment) and bio-shielding concrete from decommissioning of nuclear reactor were carried out by dynamic sequential extraction using an on-line sequential injection (SI) system combined with a specially designed extraction column. Plutonium in the fractions from the sequential extraction was separated by ion exchange chromatography and measured using alpha spectrometry. The analytical results show a higher mobility of plutonium in bio-shielding concrete, which means attention should be paid to the treatment and disposal of nuclear waste from decommissioning. |
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Keywords: | Plutonium Environmental samples Concrete Fractionation Sequential extraction Mobility Sequential injection |
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