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Contrasting platinum trajectories in three major French rivers using dated sediment cores (1910–2021): From geochemical baseline to emerging source signals

dc.rights.licenseopenen_US
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCHASTANET, Maxime
hal.structure.identifierMorphodynamique Continentale et Côtière [M2C]
dc.contributor.authorDEBRET, Maxime
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorGARDES, Thomas
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorSCHAFER, Jorg
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorABDOU, Melina
hal.structure.identifierMilieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols [METIS]
dc.contributor.authorLESTEL, Laurence
hal.structure.identifierMilieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols [METIS]
dc.contributor.authorMOREREAU, Amandine
hal.structure.identifierLEHNA - Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés [équipe IAPHY] [LEHNA IAPHY]
dc.contributor.authorMOURIER, Brice
hal.structure.identifierGéoHydrosystèmes COntinentaux [GéHCO]
dc.contributor.authorGROSBOIS, Cécile
hal.structure.identifierLaboratoire de recherche sur les transferts des radionucléides au sein des écosystèmes aquatiques [IRSN/PSE-ENV/STAAR/LRTA]
dc.contributor.authorEYROLLE, Frederique
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCOYNEL, Alexandra
dc.date.accessioned2025-04-09T08:58:54Z
dc.date.available2025-04-09T08:58:54Z
dc.date.issued2024-06-25
dc.identifier.issn0048-9697en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/206056
dc.description.abstractEnPlatinum (Pt) is a Technology Critical Element (TCE) which, since the 1990s, has been mainly used in the industry in catalytic converters for automobile emission control. Previous studies have shown Pt contamination of road-side sediments and surface sediments in urban rivers and lakes but few of them have addressed temporal variations. The present work presents historical Pt concentration trends in 137Cs-dated sediment cores from floodplains or secondary channels at the outlets of three major French watersheds (Loire, Rhone, and Seine Rivers) covering the past ∼110 years, i.e., from the 1910s to 2021. Platinum baseline levels in the sediment were estimated for the Loire River (0.76 ± 0.22 μg kg−1 for the period ∼1910-∼1955) and the Rhone River (1.64 ± 0.41 μg kg−1), and historical Pt variations seem to reflect variations in hydrodynamics and grain size composition. Since the early 2000s, Pt concentrations in the Loire and the Rhone River sediments tend to increase (>2.5 μg kg−1) and were attributed to the use of car catalytic converters, an emerging technology since the 1990s using >50 % of European Pt demand. High and variable historical Pt concentrations (up to 14.6 μg kg−1) in the Seine River sediments may reflect legacy Pt sources due to former anthropogenic activities in this watershed, such as the use of Pt-based catalysts for petroleum refinery since the end of the 1940s, coal handling and precious metals refining, probably concealing the likely presence of an emerging traffic-related Pt signal. This first comparison of historical Pt concentration trends in sediments from contrasting watersheds allows to distinguish signals originating from different natural and anthropogenic sources (background level, historical sources, road traffic).
dc.description.sponsorshipLe témoignage des archives sédimentaires pour mieux appréhender l'impact environnemental des nouvelles technologies - ANR-19-CE03-0009en_US
dc.language.isoENen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/
dc.subject.enSeine River
dc.subject.enEmerging metals
dc.subject.enHistorical sources
dc.subject.enLoire River
dc.subject.enPlatinum Group Elements (PGE)
dc.subject.enRhone River
dc.title.enContrasting platinum trajectories in three major French rivers using dated sediment cores (1910–2021): From geochemical baseline to emerging source signals
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.scitotenv.2024.172937en_US
dc.subject.halSciences de l'environnementen_US
dc.subject.halSciences de l'environnement/Milieux et Changements globauxen_US
bordeaux.journalScience of the Total Environmenten_US
bordeaux.page172937en_US
bordeaux.volume931en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamTGMen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-04769113
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Science%20of%20the%20Total%20Environment&rft.date=2024-06-25&rft.volume=931&rft.spage=172937&rft.epage=172937&rft.eissn=0048-9697&rft.issn=0048-9697&rft.au=CHASTANET,%20Maxime&DEBRET,%20Maxime&GARDES,%20Thomas&SCHAFER,%20Jorg&ABDOU,%20Melina&rft.genre=article


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