title: Determination of U, Pu and Am isotopes in Irish Sea sediment by a combination of AMS and radiometric methods.
abstract: Samples from a marine sediment core from the Irish Sea (54.416 N, 3.563 W) were analyzed for the isotopic composition of uranium, plutonium and americium by a combination of radiometric methods and AMS. The radiochemical procedure consisted of a Pu separation step by anion exchange, subsequent U separation by extraction chromatography using UTEVA® and finally Am separation with TRU® Resin. Additionally to radiometric determination of these isotopes by alpha spectrometry, the separated samples were also used for the determination of (236)U/(238)U and plutonium isotope ratios by Accelerator Mass Spectrometry (AMS) at the VERA facility.
authors.affiliation: Department of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria. michaela.srncik@univie.ac.at
authors.forename: M
authors.initials: M
authors.lastname: Srncik
authors.forename: E
authors.initials: E
authors.lastname: Hrnecek
authors.forename: P
authors.initials: P
authors.lastname: Steier
authors.forename: G
authors.initials: G
authors.lastname: Wallner
mesh_terms: D000512:Alpha Particles; D000576:Americium / Q000032:analysis*; D019015:Geologic Sediments / Q000737:chemistry*; D007474:Ion Exchange; D007494:Ireland; D013058:Mass Spectrometry / Q000379:methods; D009792:Oceans and Seas; D011005:Plutonium / Q000032:analysis*; D011834:Radiation Monitoring / Q000379:methods / Q000706:statistics & numerical data*; D011848:Radioactive Pollutants / Q000032:analysis*; D011874:Radiometry / Q000379:methods; D014501:Uranium / Q000032:analysis*
chemical_list: D011848:Radioactive Pollutants; D014501:Uranium; D011005:Plutonium; D000576:Americium