TY - JOUR T1 - Flux estimation, temporal trends and source determination of trace metal contamination in a major tributary of the Seine estuary, France A1 - Gardes,Thomas A1 - Debret,Maxime A1 - Copard,Yoann A1 - Coynel,Alexandra A1 - Deloffre,Julien A1 - Fournier,Matthieu A1 - Revillon,Sidonie A1 - Nizou,Jean A1 - Develle,Anne-Lise A1 - Sabatier,Pierre A1 - Marcotte,Stéphane A1 - Patault,Edouard A1 - Faivre,Quentin A1 - Portet-Koltalo,Florence AD - Normandie Univ, Rouen, UNIROUEN, UNICAEN, CNRS, M2C, 76000 Rouen, France AD - Normandie Univ., Rouen, UMR CNRS, 6014 COBRA, 55 Rue Saint Germain, 27000 Evreux, France AD - Université de Bordeaux, UMR EPOC CNRS 5085, 33615 Pessac, France AD - IFREMER, IUEM, Place N. Copernic, F-29280 Brest, France AD - Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, EDYTEM, 73000 Chambéry, France AD - Normandie Univ, Rouen, INSA de Rouen, UMR CNRS 6014 COBRA, Avenue de l'Université, 76801 Saint-Etienne-du-Rouvray Cedex, France AD - Université de Tours, EA 6293 GéHCO, Parc de Grandmont, 37200 Tours, France AD - AD - UR - https://doi.org/10.1016/j.scitotenv.2020.138249 DO - 10.1016/j.scitotenv.2020.138249 KW - Anthropogenic impacts KW - Trace metals and metalloids KW - Eure River watershed KW - Temporal trends KW - Particulate metal flux KW - Pb isotopes N2 - 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. Y1 - 2020/07 PB - Elsevier BV JF - Science Of The Total Environment SN - 0048-9697 VL - 724 ID - 73046 ER -