title: Fractionation of plutonium in environmental and bio-shielding concrete samples using dynamic sequential extraction.
abstract: Fractionation of plutonium isotopes ((238)Pu, (239,240)Pu) 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.
authors.affiliation: Radiation Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark, DK-4000 Roskilde, Denmark.
authors.forename: Jixin
authors.initials: J
authors.lastname: Qiao
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Hou
mesh_terms: D019149:Bioreactors; D047852:Chernobyl Nuclear Accident; D003247:Conservation of Natural Resources / Q000379:methods*; D003718:Denmark; D004784:Environmental Monitoring / Q000379:methods*; D019015:Geologic Sediments / Q000032:analysis; D009792:Oceans and Seas; D009862:Online Systems; D011005:Plutonium / Q000302:isolation & purification*; D011835:Radiation Protection / Q000379:methods*; D012990:Soil Pollutants, Radioactive / Q000032:analysis; D014455:Ukraine
chemical_list: D012990:Soil Pollutants, Radioactive; D011005:Plutonium