Article dans une revue
Geochimica et Cosmochimica Acta
Année : 2012
Historical levels of heavy metals and artificial radionuclides reconstructed from overbank sediment records in lower Rhône River (South - East France).
Trace metals (Cu, Cd, Cr, Ni, Pb, Zn, Hg) and artificial radionuclides (Cs-137, Am-241, Pu-238, and Pu239 + 240) were investigated in overbank sediments located in inter embankment areas of the lower Rhone River. Enrichment factors (EF) and anthropogenic factors (AF) were calculated to estimate the level of contamination in these sediment storages. The results show that in the studied sites Co, Ni and Sc display low EF values and are mainly from lithogenic origin. For the other studied trace metals a great variability of sedimentary record is observed. Significant anthropogenic enrichment was highlighted at a particular site that undergoes fluvial inputs occurring in the last 50 years. Lead is the element with the highest EF values (EF = 13), followed by Cd (EF = 11), Cu (EF = 5), Hg (EF = 7), and Zn (EF = 2). Temporal variations of Pb, Cd and Hg show a maximum in the 1960's and a decreasing trend afterward. Maximum enrichment of artificial radionuclides were observed in sediment deposit during the period 1960-1990 when maximum liquid releases from nuclear activities occurred. These results indicate that despite the high-energy conditions and the generally sandy nature of the riverbank sediments, significant anthropogenic enrichments were observed in some areas of sediment accumulation in the lower Rhone River. These enrichments are however relatively low compared to some other rivers in France and Europe due to the important suspended sediment discharge in this River, in particular during strong floods, which dilutes the anthropogenic inputs of contaminant. (C) 2011 Elsevier Ltd. All rights reserved.
Trace metals (Cu, Cd, Cr, Ni, Pb, Zn, Hg) and artificial radionuclides (Cs-137, Am-241, Pu-238, and Pu239 + 240) were investigated in overbank sediments located in inter embankment areas of the lower Rhone River. Enrichment factors (EF) and anthropogenic factors (AF) were calculated to estimate the level of contamination in these sediment storages. The results show that in the studied sites Co, Ni and Sc display low EF values and are mainly from lithogenic origin. For the other studied trace metals a great variability of sedimentary record is observed. Significant anthropogenic enrichment was highlighted at a particular site that undergoes fluvial inputs occurring in the last 50 years. Lead is the element with the highest EF values (EF = 13), followed by Cd (EF = 11), Cu (EF = 5), Hg (EF = 7), and Zn (EF = 2). Temporal variations of Pb, Cd and Hg show a maximum in the 1960's and a decreasing trend afterward. Maximum enrichment of artificial radionuclides were observed in sediment deposit during the period 1960-1990 when maximum liquid releases from nuclear activities occurred. These results indicate that despite the high-energy conditions and the generally sandy nature of the riverbank sediments, significant anthropogenic enrichments were observed in some areas of sediment accumulation in the lower Rhone River. These enrichments are however relatively low compared to some other rivers in France and Europe due to the important suspended sediment discharge in this River, in particular during strong floods, which dilutes the anthropogenic inputs of contaminant. (C) 2011 Elsevier Ltd. All rights reserved.
Titre
en
Historical levels of heavy metals and artificial radionuclides reconstructed from overbank sediment records in lower Rhône River (South - East France).
Auteur(s)
E. Ferrand1
, F. Eyrolle1
, Olivier Radakovitch2
, Mireille Provansal2
, Simon Dufour3
, Claude Vella2
, Guillaume Raccasi2
, R. Gurriaran1
1
IRSN -
Institut de Radioprotection et de Sûreté Nucléaire
( 300040 )
- F-92260, Fontenay-aux-Roses
- France
2
CEREGE -
Centre européen de recherche et d'enseignement des géosciences de l'environnement
( 199954 )
- Europôle Méditerranéen de l'Arbois - Avenue Louis Philibert - BP 80 - 13545 Aix-en-Provence cedex 4
- France
Institut de Recherche pour le Développement UMR_D161 ( 67872 )
;
Institut National de la Recherche Agronomique UMR1410 ( 92114 )
;
Aix Marseille Université UM34 ( 198056 )
;
Collège de France UMR7330 ( 300026 )
;
Institut national des sciences de l'Univers ( 300045 )
;
Centre National de la Recherche Scientifique UMR7330 ( 441569 )
3
LETG - Rennes -
Littoral, Environnement, Télédétection, Géomatique
( 3177 )
- Maison de la Recherche Place du Recteur Henri Le Moal 35043 RENNES CEDEX
- France
Littoral, Environnement, Télédétection, Géomatique UMR 6554 ( 14266 )
;
Université de Caen Normandie ( 7127 )
;
Normandie Université ( 455934 )
;
Université d'Angers ( 74911 )
;
École Pratique des Hautes Études ( 110691 )
;
Université Paris Sciences et Lettres ( 564132 )
;
Université de Brest ( 300314 )
;
Université de Rennes 2 ( 406201 )
;
Centre National de la Recherche Scientifique UMR 6554 ( 441569 )
;
Institut de Géographie et d'Aménagement Régional de l'Université de Nantes ( 530572 )
;
Université de Nantes 93263 ( 93263 )
Date de publication
2012
Comité de lecture
Oui
Vulgarisation
Non
Langue du document
Anglais
Audience
Internationale
Volume
82
Page/Identifiant
163-182
Nom de la revue
Geochimica et Cosmochimica Acta
(ISSN : 0016-7037, ISSN électronique : 0016-7037)
Publié par Elsevier
Revue non référencée dans Sherpa-Romeo
E. Ferrand, F. Eyrolle, Olivier Radakovitch, Mireille Provansal, Simon Dufour, et al.. Historical levels of heavy metals and artificial radionuclides reconstructed from overbank sediment records in lower Rhône River (South - East France).. Geochimica et Cosmochimica Acta, 2012, 82, pp.163-182. ⟨10.1016/j.gca.2011.11.023⟩. ⟨halshs-00692500⟩