| Registro completo |
| Provedor de dados: |
ArchiMer
|
| País: |
France
|
| Título: |
Flux estimation, temporal trends and source determination of trace metal contamination in a major tributary of the Seine estuary, France
|
| Autores: |
Gardes, Thomas
Debret, Maxime
Copard, Yoann
Coynel, Alexandra
Deloffre, Julien
Fournier, Matthieu
Revillon, Sidonie
Nizou, Jean
Develle, Anne-lise
Sabatier, Pierre
Marcotte, Stéphane
Patault, Edouard
Faivre, Quentin
Portet-koltalo, Florence
|
| Data: |
2020-07
|
| Ano: |
2020
|
| Palavras-chave: |
Anthropogenic impacts
Trace metals and metalloids
Eure River watershed
Temporal trends
Particulate metal flux
Pb isotopes
|
| Resumo: |
Anthropogenic impacts on rivers have increased significantly over the past ~150 years, particularly at the beginning of the industrial revolution. Among other signs, this impact is manifested through the addition of trace metals and metalloid elements to rivers. The Eure River watershed in France covers an area of 6017 km2 and is a major tributary of the Seine estuary. It is not exempt from anthropogenic pressures and has been exposed to significant metal discharges over the last 80 years. The average concentrations of metals (i.e., Cr, Co, Ni, Cu, Zn, Ag, Cd, Sb, and Pb), in suspended particulate matter currently transported by the river are high compared to the local geochemical background. Moreover, the lack of correlation between concentration variations and the hydrosedimentary behaviour of the Eure River suggests that the river is currently under anthropogenic pressure. Analysis of sediment cores indicate strong As contamination during the 1940s, Cr, Co, Ni, Cu, Zn, Ag, Cd, and Hg contamination during the 1960s and 1970s, and Sb and Pb contamination during the 1990s and 2000s. The enrichment factors calculation suggests that total anthropogenic pressure within the Eure River watershed since the 1940s was comparable or higher than those in many other French watersheds. An estimation of particulate metal flux in 2017 shows that the Eure River watershed contributed to 7, 8, 9, 10 and 16% of total inputs to the Seine estuary in Cr, Cu, Zn, Cd and Pb respectively. Moreover, the estimation of past theoretical flux indicates that during the 1990s the Eure River watershed was the main contributor of particulate Pb to the estuary. The use of Pb isotopes has revealed that this contamination was primarily of industrial origin.
|
| Tipo: |
Text
|
| Idioma: |
Inglês
|
| Identificador: |
https://archimer.ifremer.fr/doc/00618/73046/72159.pdf
DOI:10.1016/j.scitotenv.2020.138249
https://archimer.ifremer.fr/doc/00618/73046/
|
| Editor: |
Elsevier BV
|
| Formato: |
application/pdf
|
| Fonte: |
Science Of The Total Environment (0048-9697) (Elsevier BV), 2020-07 , Vol. 724 , P. 138249 (16p.)
|
| Direitos: |
info:eu-repo/semantics/openAccess
restricted use
|
|
