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

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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 ?

Details

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
Publication statusPublished - 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, France
Duration: 4 Jun 20075 Jun 2007

Conference

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

Keywords

  • uranium, soil-to-plant transfer, rhizosphere

ID: 296781