title: The first use of (236)U in the general environment and near a shutdown nuclear power plant.
abstract: We present a first effort to investigate (236)U in the environment near a shutdown nuclear power plant far away from highly contaminated sites, by using accelerator mass spectrometry. The detection limit of about 1pg (236)U allowed us to identify a minimal increase of the (236)U/(238)U isotopic ratio correlated to a peak of (137)Cs in river sediments downstream of the nuclear power plant, and to detect anthropogenic (236)U also upstream, where it is probably not related to the power plant but to global fallout. The (236)U content shoved variations of the (236)U/(238)U isotopic ratio in relation to the chemical-physical characteristics of the sediments. This demonstrates the potential of (236)U as an environmental tracer, and as an indicator for releases from nuclear facilities.
authors.affiliation: Vienna Environmental Research Accelerator (VERA), Fakultät für Physik - Isotopenforschung, Universität Wien, Wien, Austria. francesca.quinto@unina2.it
authors.forename: F
authors.initials: F
authors.lastname: Quinto
authors.forename: P
authors.initials: P
authors.lastname: Steier
authors.forename: G
authors.initials: G
authors.lastname: Wallner
authors.forename: A
authors.initials: A
authors.lastname: Wallner
authors.forename: M
authors.initials: M
authors.lastname: Srncik
authors.forename: M
authors.initials: M
authors.lastname: Bichler
authors.forename: W
authors.initials: W
authors.lastname: Kutschera
authors.forename: F
authors.initials: F
authors.lastname: Terrasi
authors.forename: A
authors.initials: A
authors.lastname: Petraglia
authors.forename: C
authors.initials: C
authors.lastname: Sabbarese
mesh_terms: D002588:Cesium Radioisotopes / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods; D019015:Geologic Sediments / Q000032:analysis*; D055848:Nuclear Power Plants; D011834:Radiation Monitoring / Q000379:methods*; D018788:Radioactive Hazard Release; D045483:Rivers; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D014501:Uranium / Q000032:analysis*; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D002588:Cesium Radioisotopes; D012990:Soil Pollutants, Radioactive; D014875:Water Pollutants, Radioactive; D014501:Uranium