Atmospheric deposition and migration of artificial radionuclides in Alpine soils (Val Piora, Switzerland) compared to the distribution of selected major and trace elements.

Détails

ID Serval
serval:BIB_D1FFDA6A231E
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Atmospheric deposition and migration of artificial radionuclides in Alpine soils (Val Piora, Switzerland) compared to the distribution of selected major and trace elements.
Périodique
Science of the Total Environment
Auteur(s)
Chawla F., Steinmann P., Pfeifer H.R., Froidevaux P.
ISSN-L
0048-9697
Statut éditorial
Publié
Date de publication
2010
Peer-reviewed
Oui
Volume
408
Numéro
16
Pages
3292-3302
Langue
anglais
Résumé
Artificial radionuclides ((137)Cs, (90)Sr, Pu, and (241)Am) are present in soils because of Nuclear Weapon Tests and accidents in nuclear facilities. Their distribution in soil depth varies according to soil characteristics, their own chemical properties, and their deposition history. For this project, we studied the atmospheric deposition of (137)Cs, (90)Sr, Pu, (241)Am, (210)Pb, and stable Pb. We compared the distribution of these elements in soil profiles from different soil types from an alpine Valley (Val Piora, Switzerland) with the distribution of selected major and trace elements in the same soils. Our goals were to explain the distribution of the radioisotopes as a function of soil parameters and to identify stable elements with analogous behaviors. We found that Pu and (241)Am are relatively immobile and accumulate in the topsoil. In all soils, (90)Sr is more mobile and shows some accumulations at depth into Fe-Al rich horizons. This behavior is also observed for Cu and Zn, indicating that these elements may be used as chemical analogues for the migration of (90)Sr into the soil.
Mots-clé
Plutonium, Americium, Strontium-90, Cesium-137, Mobility, Geochemistry, liquid distribution coefficients, nevada test-site, cs-137 deposition, organic-matter, forest soil, radiocesium, plutonium, sr-90, association, substances
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Création de la notice
17/08/2010 14:19
Dernière modification de la notice
03/03/2018 21:38
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