Froehlich, MichaelaHrnecek, E.Steier, P.Wallner, Gabriele2015-12-100265-931Xhttp://hdl.handle.net/1885/59933Samples 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 236U/238U and plutonium isotope ratios by Accelerator Mass Spectrometry (AMS) at the VERA facility.236 U/ 238 U240 Pu/ 239 Pu242 Pu/ 239 PuSediment samplesSellafieldAlpha particle spectrometersAmericiumAnoxic sedimentsChromatographyIsotopesMass spectrometryPlutoniumRadiome 236U/238U240Pu/239Pu242Pu/239PuSediment samplesSellafield201110.1016/j.jenvrad.2011.01.0042016-06-14