Tellurium behaviour in a major European fluvial–estuarine system (Gironde, France): fluxes, solid/liquid partitioning and bioaccumulation in wild oysters
| dc.rights.license | open | en_US |
| dc.contributor.author | GIL-DÍAZ, Teba | |
| dc.contributor.author | SCHÄFER, Jörg | |
| dc.contributor.author | DUTRUCH, Lionel | |
| dc.contributor.author | BOSSY, Cécile | |
| dc.contributor.author | POUGNET, Frédérique | |
| hal.structure.identifier | Environnements et Paléoenvironnements OCéaniques [EPOC] | |
| dc.contributor.author | ABDOU, Melina | |
| dc.contributor.author | LERAT-HARDY, Antoine | |
| dc.contributor.author | PERETO, Clément | |
| dc.contributor.author | DERRIENNIC, Hervé | |
| dc.contributor.author | BRIANT, Nicolas | |
| dc.contributor.author | SIREAU, Teddy | |
| dc.contributor.author | KNOERY, Joël | |
| dc.contributor.author | BLANC, Gérard | |
| dc.date.accessioned | 2024-02-29T10:10:32Z | |
| dc.date.available | 2024-02-29T10:10:32Z | |
| dc.date.issued | 2019 | |
| dc.identifier.issn | 1448-2517 | en_US |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/188503 | |
| dc.description.abstractEn | The environmental behaviour of tellurium is poorly understood. We investigate the transport of tellurium in both dissolved and particulate forms from the river watershed to the Gironde Estuary, where a 30-year historical record provides insight on tellurium bioaccumulation in wild oysters. These results constitute the first comprehensive study on natural tellurium behaviour in a major fluvial-estuarine system, information essential for predictive modelling of tellurium risk assessment. AbstractTellurium (Te) is a technology critical element (TCE) with largely unknown environmental behaviour, especially in continent-ocean interface systems. The unknown behaviour results from the lack of studies in aquatic environments and from analytical challenges limiting the determination of its naturally low (ultra-trace) environmental levels. We performed a comprehensive study of Te in the Lot–Garonne–Gironde fluvial–estuarine system to better understand seasonal variations, solid/liquid partitioning (Kd), gross fluxes, estuarine dynamics, and transfer to wild oysters at the estuary mouth. A temporal record (2014–2017) of dissolved (Ted) and particulate (Tep) Te concentrations at five sites in the Lot–Garonne River system shows little differences between sites, with average ~0.9ngL−1 and ~50µgkg−1 respective concentrations. Watershed Ted and Tep follow parallel seasonal patterns, which result in constant partitioning (log10 Kd ~4.75Lkg−1), with constant annual gross dissolved fluxes (~15.0kgy−1) and variable gross particulate fluxes (from 6.50 to 140kgy−1) entering the Gironde Estuary. Estuarine reactivity in contrasting hydrological conditions (from flood to drought) suggest that grain-size effects and/or estuarine hydrological residence times strongly affect Tep behaviour. Historical records (1984–2017) of Te in wild oysters at the estuary mouth vary from 1.33 to 2.89µgkg−1 dry weight (d.w.), without any clear long-term trend. This study provides rare knowledge on Te environmental dynamics in aquatic systems, and suggests that, although no current anthropogenic sources were identified in the economically developed Lot-Garonne-Gironde fluvial-estuarine system, there is a non-negligible bioaccumulation in wild oysters at the estuary mouth. | |
| dc.description.sponsorship | AMORAD1 | en_US |
| dc.description.sponsorship | Pour une gestion intégrée et durable des ressources en eau de bassins soumis à des pollutions industrielles et urbaines: étude comparative du Lot (France) et du Danshuei (Taiwan) | en_US |
| dc.language.iso | EN | en_US |
| dc.title.en | Tellurium behaviour in a major European fluvial–estuarine system (Gironde, France): fluxes, solid/liquid partitioning and bioaccumulation in wild oysters | |
| dc.type | Article de revue | en_US |
| dc.identifier.doi | 10.1071/EN18226 | en_US |
| dc.subject.hal | Sciences de l'environnement | en_US |
| bordeaux.journal | Environmental Chemistry | en_US |
| bordeaux.page | 229 | en_US |
| bordeaux.volume | 16 | en_US |
| bordeaux.hal.laboratories | EPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805 | en_US |
| bordeaux.issue | 4 | en_US |
| bordeaux.institution | Université de Bordeaux | en_US |
| bordeaux.institution | CNRS | en_US |
| bordeaux.team | TGM | en_US |
| bordeaux.peerReviewed | oui | en_US |
| bordeaux.inpress | non | en_US |
| bordeaux.import.source | hal | |
| hal.identifier | hal-03767233 | |
| hal.version | 1 | |
| hal.popular | non | en_US |
| hal.audience | Internationale | en_US |
| hal.export | false | |
| workflow.import.source | hal | |
| dc.rights.cc | Pas de Licence CC | en_US |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Environmental%20Chemistry&rft.date=2019&rft.volume=16&rft.issue=4&rft.spage=229&rft.epage=229&rft.eissn=1448-2517&rft.issn=1448-2517&rft.au=GIL-D%C3%8DAZ,%20Teba&SCH%C3%84FER,%20J%C3%B6rg&DUTRUCH,%20Lionel&BOSSY,%20C%C3%A9cile&POUGNET,%20Fr%C3%A9d%C3%A9rique&rft.genre=article |
