Detection and quantification of As(III)-oxidizing microbes in soils highly polluted by breaking-down of old chemical ammunition during inter-war - BRGM - Bureau de recherches géologiques et minières Access content directly
Conference Papers Year : 2016

Detection and quantification of As(III)-oxidizing microbes in soils highly polluted by breaking-down of old chemical ammunition during inter-war

Abstract

The open-burning of organo-arsenical compounds present in chemical ammunitions from the First World War was responsible for locally high concentrations of arsenic in top-soil of a highly polluted site from the region of Verdun (France). In order to understand the biogeochemistry of arsenic in this type of environment, quantitative and qualitative characteristics of microbial communities were determined in soil samples with differing As pollution levels. The total concentration of micro-organisms was negatively affected by the pollution level. However the proportion of heterotrophic As(III)-oxidizing organisms and the As(III)-oxidizing rate were higher in the most contaminated than in the less contaminated samples. These results suggest that pollutants, including arsenic, exerted a selective pressure on composition and/or activity of microbial communities.
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hal-01312137 , version 1 (04-05-2016)

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Hugues Thouin, Lydie Le Forestier, Pascale Gautret, Sébastien Dupraz, Daniel Hube, et al.. Detection and quantification of As(III)-oxidizing microbes in soils highly polluted by breaking-down of old chemical ammunition during inter-war. 6th International Congress on Arsenic in the Environment, Jun 2016, Stockolm, Sweden. ⟨10.1201/b20466-54⟩. ⟨hal-01312137⟩
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