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Selenite mobility in soils: Implication of chemical and microbiological processes


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L. FEVRIER AND A. MARTIN-GARIN
Geochim. Cosmochim. Acta, 68 (11A) : 521 (suppl1)

Type de document > *Article de revue

Mots clés > mobilité, sélénium, sol

Unité de recherche > IRSN/DEI/SECRE/LRE

Auteurs > FEVRIER Laureline, MARTIN-GARIN Arnaud

Date de publication > 26/12/2004

Résumé

Understanding the biogeochemical behaviour of selenium in the biosphere is of major concern in ecotoxicology [1] but also in radioecology due to its presence as a long-lived radionuclide (79Se) in the nuclear wastes. In moderately oxidizing conditions like surface soils, selenium exists as selenite (Se(IV)) which can react with mineral particles [2] but also with microorganisms [3]. This study investigated the role of abiotic and biotic processes in the control of Se(IV) mobility in soils.