Mobility, distribution and toxicity of uranium in soil-plant systen and in rhizosphere

Yves Thiry, Hildegarde Vandenhove, Lise Duquène, Gervais Rufyikiri, Anne Straczek, May Van Hees, Jean Wannijn, Hans Vanmarcke

    Research outputpeer-review

    Abstract

    The fate of uranium in the soil-plant system is complex and involve physico-chemical as well as biological factors. In order to elaborate appropriate phytomanagement options and to assess potential environmental impact and public and biota exposure from uranium contaminated sites, additional knowledges on the mechanisms and processes ruling uranium mobility in soil-plant systems and in rhizosphere are needed. To fill those gaps, several complementary experimental approaches were carried out at SCK•CEN and the research was oriented to contribute to answers to the following questions: • In U-contaminated areas, what is the impact of vegetation on U cycling dynamics and possible long term dissemination ? • To which extent microbiota and mycorrhizal fungi in particular can influence U accumulation by plants ? • Can root-induced changes in rhizospheric soil properties significantly affect the U bioavailability ? • Is it possible to establish a link between the soil or plant properties and the U availability to plant uptake ? • Can we easily reduce the U mobility and bioavailability through the use of chemical stabilizing agents ? • How to deal with the paucity of reliable studies on U toxicity in soils ?
    Original languageEnglish
    Title of host publicationToxicocinétique des xénobiotiques dans l'évaluation des risques pour l'homme et l'environnment
    Place of PublicationParis, France
    Pages23-26
    StatePublished - 4 Jun 2007
    EventColloque ARET 2007 - Toxicocinétique des xénobiotiques dans l'évaluation des risques pour l'homme et l'environnment - Association pour la Recherche en Toxicologie, Paris
    Duration: 4 Jun 20075 Jun 2007

    Conference

    ConferenceColloque ARET 2007 - Toxicocinétique des xénobiotiques dans l'évaluation des risques pour l'homme et l'environnment
    Country/TerritoryFrance
    CityParis
    Period2007-06-042007-06-05

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