Caplette, J N; Wilson, S C; Mestrot, A (2024). Antimony release and volatilization from organic-rich and iron-rich submerged soils. Journal of hazardous materials, 470(134230), p. 134230. Elsevier 10.1016/j.jhazmat.2024.134230
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Antimony (Sb) is an poorly understood, increasingly common pollutant, especially in soils susceptible to waterlogging. We investigated the impact of waterlogging on Sb release, methylation, and volatilization from an organic-rich wetland soil and an iron (Fe)-rich floodplain soil in a 27-day microcosm experiment. The release of Sb into the porewaters of the organic-rich soil was environmentally relevant and immediate with waterlogging (3.2 to 3.5 mg L-1), and likely associated with a complex interplay of sulfide precipitation, sorption with organic matter and manganese (Mn) (oxyhydr)oxides in the soil. The release of Sb from the Fe-rich soil was likely associated with Fe-(oxyhydr)oxide reduction and immobilized due to co-precipitation with Fe-sulfides or as Sb-sulfides. Volatile Sb was produced from the soils after waterlogging. The organic-rich soil produced more volatile Sb (409 to 835 ng kgsoil-1), but the Fe-rich soil volatilized Sb more efficiently. The negligible association of Sb volatilization with soil parameters indicates a more complex underlying, potentially microbial, mechanism and that antimony volatilization could be ubiquitous and not dependent on specific soil properties. Future works should investigate the microbial and physiochemical drivers of Sb volatilization in soils as it may be an environmentally relevant part of the biogeochemical cycle.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Institute of Geography > Physical Geography > Unit Soil Science 08 Faculty of Science > Institute of Geography 08 Faculty of Science > Institute of Geography > Physical Geography |
UniBE Contributor: |
Caplette, Jaime Nicole, Mestrot, Adrien |
Subjects: |
900 History > 910 Geography & travel |
ISSN: |
0304-3894 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
15 Apr 2024 09:52 |
Last Modified: |
25 Apr 2024 00:16 |
Publisher DOI: |
10.1016/j.jhazmat.2024.134230 |
PubMed ID: |
38608583 |
Uncontrolled Keywords: |
Flooding Methylation Speciation Sulfate reduction Wetland |
BORIS DOI: |
10.48350/195953 |
URI: |
https://boris.unibe.ch/id/eprint/195953 |
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