BATTAGLIA-BRUNET, Fabienne; LE GUEDARD, Marina; FAURE, Olivier; CHARRON, Mickael; HUBE, Daniel; DEVAU, Nicolas; JOULIAN, Catherine; THOUIN, Hugues; HELLAL, Jennifer

doi:10.1016/j.jhazmat.2020.124580

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BATTAGLIA-BRUNET, Fabienne

LE GUEDARD, Marina
Laboratoire de biogenèse membranaire [LBM]

FAURE, Olivier

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Article de revue

Ce document a été publié dans

Journal of Hazardous Materials. 2021, vol. 409

Résumé en anglais

Agricultural soils can contain high arsenic (As) concentrations due to specific geological contexts or pollution. Agricultural practices, in particular fertilizer amendments, could influence As speciation and mobility, thus increasing its transfer to crops and its toxicity. In the present study, field-relevant amounts of fertilizers were applied to soils from a cultivated field that was a former ammunition-burning site. Potassium phosphate, ammonium sulfate and organic matter were applied to these soils in laboratory experiments to assess both their impact on As leaching and on As bioavailability to Lactuca sativa. Results indicate that none of the fertilizers significantly influences the speciation and quantity of mobile As, although trends showed an increase of mobility with KP and a decrease of mobility with ammonium sulfate. The most probable number of AsIII-oxidizing microbes and AsIII-oxidizing activity were strongly linked to As levels in water and soils. In the reference un-polluted soil, ammonium sulfate negatively affected AsIII-oxidizing activity. KP amendment induced a small increase of As content in plants, and the polluted soil amended with ammonium sulfate was significantly less phytotoxic than the un-amended soil. Results suggest that ammonium sulfate, the most frequently applied fertilizer on site, influences the interactions between As, microorganisms and plants.< Réduire

Mots clés en anglais

Arsenic

Soil

Water

Fertilizers

Microorganisms

Omega 3 index

URI

https://oskar-bordeaux.fr/handle/20.500.12278/136413

DOI

http://dx.doi.org/10.1016/j.jhazmat.2020.124580

Project ANR

Evaluation et gestion des contaminations en arsenic dans les eaux et les sols agricoles - ANR-16-WTW5-0003

Unités de recherche

Laboratoire de Biogenèse Membranaire (LBM) - UMR 5200