Per- and polyfluoroalkyl substances (PFAS) in surface sediments: Occurrence, patterns, spatial distribution and contribution of unattributed precursors in French aquatic environments
| dc.rights.license | open | en_US |
| hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
| dc.contributor.author | MACORPS, Nicolas | |
| hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
| dc.contributor.author | LABADIE, Pierre | |
| dc.contributor.author | LESTREMAU, François | |
| dc.contributor.author | ASSOUMANI, Azziz | |
| hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
| dc.contributor.author | BUDZINSKI, Hélène
ORCID: 0000-0003-1028-9154 IDREF: 070478090 | |
| dc.date.accessioned | 2023-10-16T09:05:22Z | |
| dc.date.available | 2023-10-16T09:05:22Z | |
| dc.date.issued | 2023-05-20 | |
| dc.identifier.issn | 0048-9697 | en_US |
| dc.identifier.uri | oai:crossref.org:10.1016/j.scitotenv.2023.162493 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/184415 | |
| dc.description.abstractEn | While perfluoroalkyl sulfonic acids (PFSAs) and perfluoroalkyl carboxylic acids (PFCAs) are ubiquitous in aquatic environments, non-targeted methods have recently revealed the presence of numerous unidentified per- and polyfluoroalkyl substances (PFAS). Besides those methods, the total oxidizable precursor (TOP) assay has proved useful to estimate the contribution of unattributed perfluoroalkyl acids precursors (pre-PFAAs). In this study, an optimized extraction method was developed to examine the spatial distribution of 36 targeted PFAS in surface sediments collected at French nationwide scale (n = 43), including neutral, anionic and zwitterionic molecules. In addition, a TOP assay procedure was implemented to estimate the contribution of unattributed pre-PFAAs in these samples. Conversion yields of targeted pre-PFAAs were determined for the first time under realistic conditions and led to differences in oxidation profiles compared to the common spiked ultra-pure water method. PFAS were detected in 86 % of samples and ∑PFAStargeted was in the range < Limit of Detection – 23 ng g−1 dry weight (dw) (median: 1.3 ng g−1 dw), with ∑pre-PFAAstargeted representing on average 29 ± 26 % of ∑PFAS. Among pre-PFAAs, compounds of emerging interest such as the fluorotelomer sulfonamidoalkyl betaines 6:2 FTAB and 8:2 FTAB were respectively detected in 38 % and 24 % of samples, with levels similar to those of L-PFOS (<0.36–2.2, <0.50–6.8 and < 0.08–5.1 ng g−1 dw, respectively). A hierarchical cluster analysis coupled with a geographic information system-based approach revealed similarities between groups of sampling sites. For instance, elevated contribution of FTABs were associated with the proximity to airport activities where betaine-based aqueous film-forming foam (AFFFs) might have been used. In addition, unattributed pre-PFAAs were strongly correlated with ∑PFAStargeted and they accounted for 58 % of ∑PFAS (median value); they were generally found in larger quantity near industrial and urban areas where the highest ∑PFAStargeted were also observed. | |
| dc.description.sponsorship | COntinental To coastal Ecosystems: evolution, adaptability and governance - ANR-10-LABX-0045 | en_US |
| dc.language.iso | EN | en_US |
| dc.source | crossref | |
| dc.subject.en | PFAS | |
| dc.subject.en | Emerging contaminants | |
| dc.subject.en | Sediment | |
| dc.subject.en | TOP assay | |
| dc.subject.en | Hierarchical cluster analysis | |
| dc.title.en | Per- and polyfluoroalkyl substances (PFAS) in surface sediments: Occurrence, patterns, spatial distribution and contribution of unattributed precursors in French aquatic environments | |
| dc.type | Article de revue | en_US |
| dc.identifier.doi | 10.1016/j.scitotenv.2023.162493 | en_US |
| dc.subject.hal | Sciences de l'environnement | en_US |
| bordeaux.journal | Science of the Total Environment | en_US |
| bordeaux.page | 162493 | en_US |
| bordeaux.volume | 874 | en_US |
| bordeaux.hal.laboratories | EPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805 | en_US |
| bordeaux.institution | Université de Bordeaux | en_US |
| bordeaux.institution | CNRS | en_US |
| bordeaux.team | LPTC | en_US |
| bordeaux.peerReviewed | oui | en_US |
| bordeaux.inpress | non | en_US |
| bordeaux.identifier.funderID | Conseil Régional Aquitaine | en_US |
| bordeaux.import.source | dissemin | |
| hal.popular | non | en_US |
| hal.audience | Internationale | en_US |
| hal.export | false | |
| workflow.import.source | dissemin | |
| dc.rights.cc | Pas de Licence CC | en_US |
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