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Modeling of cadmium speciation and dynamics in the Seine estuary (France) |
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| Authors: | Jean-Louis Gonzalez Benedicte Thouvenin Catherine Dange Annie Fiandrino Jean-François Chiffoleau |
| Institution: | 1. Direction de l’Environnement et de l’Aménagement Littoral/Polluants Chimiques, Institut Fran?ais de Recherche pour l’Exploitation de la Mer, Z. P. de Brégaillon, B.P. 330, 83507, La Seyne sur Mer, France 2. Direction de l’Environnement et de l’Aménagement Littoral/Polluants Chimiques, Rue de l’Ile d’Yeu, Institut Fran?ais de Recherche pour l’Exploitation de la Mer, B.P. 21105, 44311, Nantes, France |
| Abstract: | A complexation model (MOCO) was used to describe cadmium (Cd) speciation during estuarine transit in the Seine estuary. This model was developed from field data. Laboratory experiments based on the use of109Cd enabled checking of certain model simplifications and hypotheses and evaluation of parameters which could not be measured directly. MOCO was coupled with a 3D multivariable hydrosedimentary model (SAM3D) to simulate Cd dynamics in the estuary. These results were compared with measurements (dissolved and particulate Cd) obtained during cruises representative of various hydrodynamic conditions. The purpose of this article is to present the modeling approach used, and its expected applications and limits. |
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