2015 | OriginalPaper | Chapter
Impact of humic substances on uranium mobility in soil – A case study from the Gessenwiese test field, Germany
Authors : Stefan Karlsson, Viktor Sjöberg, Bert Allard
Published in: Uranium - Past and Future Challenges
Publisher: Springer International Publishing
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The study has shown that in a soil with a logKd of 4–5 for uranium between the aqueous and the solid phase only some 20 % of the soil inventory of uranium is mobilized. Five consecutive L/S 10 extractions with alkali released some 75 % of the uranium inventory but not the entire content of organic matter. The mobilization of uranium coincides with that of organic matter as evidenced by size exclusion chromatography and ICP-MS. The stationary uranium coelutes with to a high extent with humic and fulvic substances.