Influence of agricultural amendments on arsenic biogeochemistry and phytotoxicity in a soil polluted by the destruction of arsenic-containing shells

JOURNAL OF HAZARDOUS MATERIALS

卷:409

Article

Battaglia-Brunet, Fabienne¹  Le Guedard, Marina^2,3  Faure, Olivier⁴  Charron, Mickael¹  Hube, Daniel¹  Devau, Nicolas¹  Joulian, Catherine¹  Thouin, Hugues¹  Hellal, Jennifer¹ 

[1] French Geol Survey BRGM, 3 Ave Claude Guillemin, F-45060 Orleans 02, France

[2] LEB Aquitaine Transfert ADERA, 71 Ave Edouard Bourlaux,CS20032, F-33140 Villenave Dornon, France

[3] Univ Bordeaux, CNRS, Lab Biogenese Membranaire LBM, UMR 5200, F-33140 Villenave Dornon, France

[4] Univ Jean Monnet, Univ Lumiere, Univ Jean Moulin,CNRS,UMR 5600,EVS,Ctr SPIN,Dept, Univ Lyon,Mines St Etienne,ENTPE,INSA Lyon,ENS Ly, F-42023 St Etienne, France

关键词: Arsenic;    Soil;    Water;    Fertilizers;    Microorganisms;    Omega 3 index;   

DOI  :  10.1016/j.jhazmat.2020.124580

来源: Elsevier

【 摘 要 】

Agricultural soils can contain high arsenic (As) concentrations due to specific geological contexts or pollution. 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 (KP), ammonium sulfate and organic matter (OM) were applied to these soils in laboratory experiments to assess their impact on As leaching, bioavailability to Lactuca sativa and microbial parameters. None of the fertilizers markedly influenced As speciation and mobility, although trends showed an increase of mobility with KP and a decrease of mobility with ammonium sulfate. Moreover, KP induced a small increase of As in Lactuca sativa, and the polluted soil amended with ammonium sulfate was significantly less phytotoxic than the un-amended soil. Most probable numbers of AsIII-oxidizing microbes and AsIII-oxidizing activity were strongly linked to As levels in water and soils. Ammonium sulfate negatively affected AsIII-oxidizing activity in the un-polluted soil. Whereas no significant effect on As speciation in water could be detected, amendments may have an impact in the long term.

【 授权许可】

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