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La contamination de la Gironde par le cadmium : origine, extension, importance ArchiMer
Boutier, Bernard; Chiffoleau, Jean-francois; Jouanneau, Jean-marie; Latouche, Claude; Philipps, Isabelle.
In 1979, the French monitoring program RNO (Réseau National d'Observation de la qualité du milieu Marin) pointed out a dramatic cadmium contamination in the oysters from the Gironde estuary (up to 100 ug -1, dry weight). The wild oyster-beds upstream the estuary were shown to be the most contaminated. This result tends to point to the river as the source of the cadmium contamination. At the same rime, uncontaminated oysters from Arcachon were transplanted in the Gironde estuary (La Fosse, Dau). This ex periment confirmed the importance and proved the permanence of the contamination. Very high concentrations of dissolved cadmium (400 ng. 1-1) were measured in the estuarine mixing zone. This phenomenon can be explained by the desorption of cadmiumfrom...
Tipo: Text Palavras-chave: Cadmium; Désorption; Estuaire; Bilan géochimique; Contamination des huîtres; Cadmium; Desorption; Estuary; Geochemical budget; Oyster contamination.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/00167/27820/26013.pdf
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