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Erschienen in:
2006 | OriginalPaper | Buchkapitel
U isotopic fractionation — a process characterising groundwater systems
verfasst von : Juhani Suksi, Kari Rasilainen, Nuria Marcos
Erschienen in: Uranium in the Environment
Verlag: Springer Berlin Heidelberg
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The activity of
234
U relative to
238
U (AR) in groundwaters is controlled by isotope fractionation in water-rock interface. The fractionation is controlled by redox-conditions and rock-groundwater contact time. The measured ARs form thus an important source of information and offer an effective tool to characterise groundwater systems along with other hydrochemical data. The purpose of this paper is to elucidate the link between ARs and groundwater conditions. The paper considers the formation of AR in groundwaters and examines measured data from several study sites in the Fennoscandian Shield.