Determining Pu-241 in environmental samples: case studies in alpine soils

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Serval ID
serval:BIB_D93C8169F60B
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Determining Pu-241 in environmental samples: case studies in alpine soils
Journal
Radiochimica Acta
Author(s)
Corcho Alvarado J.A., Chawla F., Froidevaux P.
ISSN
0033-8230
Publication state
Published
Issued date
2011
Peer-reviewed
Oui
Volume
99
Number
2
Pages
121-129
Language
english
Abstract
A procedure was developed for determining Pu-241 activity in environmental samples. This beta emitter isotope of plutonium was measured by ultra low level liquid scintillation, after several separation and purification steps that involved the use of a highly selective extraction chromatographic resin (Eichrom-TEVA). Due to the lack of reference material for Pu-241, the method was nevertheless validated using four IAEA reference sediments with information values for Pu-241. Next, the method was used to determine the Pu-241 activity in alpine soils of Switzerland and France. The Pu-241/Pu-239,Pu-240 and Pu-238/Pu-239,Pu-240 activity ratios confirmed that Pu contamination in the tested alpine soils originated mainly from global fallout from nuclear weapon tests conducted in the fifties and sixties. Estimation of the date of the contamination, using the Pu-241/Am-241 age-dating method, further confirmed this origin. However, the Pu-241/Am-241 dating method was limited to samples where Pu-Am fractionation was insignificant. If any, the contribution of the Chernobyl accident is negligible.
Keywords
Pu-241, Pu-241/Pu-239,Pu-240, Alpine soils, Am-241/Pu-241 age dating, Plutonium origin, Plasma-Mass Spectrometry, Isotopic-Ratios, Forest Soil, Plutonium, Sediments, Radionuclides, Radioactivity, Migration, Elements, Cs-137
Web of science
Open Access
Yes
Create date
06/04/2011 10:16
Last modification date
01/10/2019 6:19
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