4IPGP - Institut de Physique du Globe de Paris (IPGP, 1 rue Jussieu, 75238 Paris cedex 05 ; Université Paris Diderot, Bât. Lamarck A case postale 7011, 75205 Paris CEDEX 13 - France)
Stanford University (450 Serra Mall, Stanford, CA 94305-2004 - United States)
Abstract : The long-term behavior of U in contaminated soils and sediments downstream former U-mines is a widespread environmental challenge. Although reducing subsurface environments are generally considered as favorable for U immobilization, it has been shown that U is often present in the form of potentially labile non-crystalline U(IV) species in contaminated anoxic sediments [e.g. 1-3] and soils [e.g. 4-6]. The fate of such mononuclear or polymeric U(IV) species and their ability to eventually transform into less soluble minerals at the century or millennial scale remains poorly documented, which thus deserves further research to better constrain contaminated sites management.
https://hal-irsn.archives-ouvertes.fr/irsn-03523229 Contributor : Irsn ATHENAConnect in order to contact the contributor Submitted on : Wednesday, January 12, 2022 - 3:23:18 PM Last modification on : Saturday, June 25, 2022 - 9:11:42 AM
Pierre Lefebvre, Arnaud Mangeret, Alkiviadis Gourgiotis, Jean-Pierre Sabatier, Pierre Le Pape, et al.. Evolution of noncrystalline uranium in lake sediments over 3,300 years. GOLDSCHMIDT 2021, Jul 2021, Lyon, France. ⟨irsn-03523229⟩