Géochimie élémentaire et isotopique des métaux lourds : applications environnementales en tissu urbain et industriel

Abstract : In 2001, an urban waste incinerator equipped for power recuperation (UVE) was installed in the city of Metz. Samples of the UVE effluents were collected to characterize the mineralogical, chemical and isotopic behaviour of the metals and their environmental impact. Excess concentrations of the heavy metals as well as heavy Cd and Zn isotopes enrichment are found in the Trémie 2 ashes. Such an enrichment can be explained by kinetic fractionation during the condensation process. Elemental and isotopic analyses of epiphytic lichens, collected from Metz and the surrounding area before the UVE, were used to construct an urban atmospheric fall-out map and the evolution 2 years after. The application of Cd isotopes to an area polluted by a smelter demonstrates the potential of Cd isotopes for tracing environmental pollutants.
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Christophe Cloquet. Géochimie élémentaire et isotopique des métaux lourds : applications environnementales en tissu urbain et industriel. Sciences de la Terre. Institut National Polytechnique de Lorraine, 2005. Français. ⟨NNT : 2005INPL028N⟩. ⟨tel-01749745⟩

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