Communication Dans Un Congrès Année : 2024

Impact of PFOS, PFOA, PFHxS and PFBS addition in 4 contrasted soils: impact on microbial communities and soil N/C cycles, PFAS dynamics

Résumé

Per- and polyfluoroalkyl substances (PFAS) have emerged as a significant class of pollutants due to their broad environmental and health implications. PFAS have been used in a range of industrial and consumer applications since the 1940s, leading to their widespread presence in the environment, including among others, water sources, soil, and even the human body. Increasing scientific and regulatory attention is being paid to the occurrence and fate of PFAS in drinking water, wastewater, and the environment in general. Particularly, PFAS-contaminated soil has become increasingly reported in many parts of the world, and is now being recognized as a serious environmental hazard. When these chemicals are present in soil, they can infiltrate the groundwater, potentially leading to drinking water and food contamination. Consequently, there is a pressing need to develop, optimize, and implement remediation technologies specifically tailored to PFAS-contaminated soils. The present study aims to present experiments on 4 different soils with different physico chemical properties, artificially contaminated by a mixture of 4 PFAS (PFOS, PFOA, PFHxS and PFBS) at a concentration of 10 mg.kg-1 each. Each condition was set up with 3 replicates and 3 controls (without PFAS) per soil. The impact of PFAS addition was monitored on carbon cycle (CO2 release trapped in NaOH), nitrogen cycle (N extraction by K2SO4 0,5M (analysis by ion chromatography) and enzymatic activities. The abundance of 16S rRNA and 18S rRNA genes was monitored during 70 days, and the evolution of bacterial, archaeal and fungal biodiversity over time was monitored by metabarcoding of the 16S rRNA and ITS2 genes. The PFAS concentrations were also quantified at T0 and at the end of the microcosms experiment, highlighting minor changes. Results highlighted contrasted impact of PFAS addition on the 4 studied soils, with an impact of physico chemical properties and contrasted impact on microbial communities.
Abstract_Crampon et al..pdf (349.03 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04646135 , version 1 (12-07-2024)

Identifiants

  • HAL Id : hal-04646135 , version 1

Citer

Marc Crampon, Marie-Paule Norini, Fabienne Battaglia-Brunet, Dubravka Relic, Marija Ljesevic, et al.. Impact of PFOS, PFOA, PFHxS and PFBS addition in 4 contrasted soils: impact on microbial communities and soil N/C cycles, PFAS dynamics. ECOTOXICOMIC 2024, Nov 2024, Goteborg, Sweden. ⟨hal-04646135⟩

Collections

BRGM
19 Consultations
8 Téléchargements

Partager

More