Objectif We propose to use mercury isotope ratios analysis as a tool to investigate natural and anthropogenic emissions of mercury into the environment. Similar to the profound insights that carbon and oxygen isotope systematics have brought to climate research, we aim to use variations in mercury isotopic compositions to fingerprint natural and anthropogenic sources, quantify isotope fractionation processes and provide new constraints on models of mercury cycling. With the recent development of multi-collector indu ctively coupled plasma mass spectrometry we have the ability to obtain the high precision necessary in constraining the isotopic dimension of mercury models. Three globally important anthropogenic mercury sources will be studied: i) the contribution of fos sil fuel burning and waste incineration to urban and regional environments, ii) the contribution of mercury, released during gold mining and deforestation in the Amazon basin, to the local and global mercury cycle and iii) the contribution of zinc smelter mine tailings at a former industrial site to the seasonal Hg flux into the Lot-Garonne-Gironde river system. Long-range transport of fluvial and atmospheric mercury has caused severe health impacts far away from the original emission point source. It is in the European and global communities¿ interest to better understand these adverse effects and if necessary coordinate and improve global environmental policies. The training objectives of the proposal are to let the researcher make the transition from PhD to all-round researcher in the field of environmental geochemistry. This transition involves developing a novel method for MIR analysis, applying the method to better understand global mercury cycling, gaining supervising experience and laying the collabor ative basis for post-fellowship research projects. For the EU this research theme offers an opportunity to support a socially relevant and urgently needed investigation at the frontier of isotope geosciences. Champ scientifique sciences naturellessciences de la Terre et sciences connexes de l'environnementgéochimiesciences naturellessciences chimiqueschimie inorganiquemétal de transitioningénierie et technologiegénie de l'environnementexploitation minière et travail du mineraisciences naturellessciences chimiqueschimie analytiquespectrométrie de masseingénierie et technologiegénie de l'environnementgestion des déchetsprocédés de traitement des déchets Mots‑clés Aerosol Amazon Atmospheric transport Coal Fluvial Fly ash Global Impact Hg Isotope Fractionation Mass Spectrometry Mercury Pollution Regional Smelters Source Fingerprinting Urban Programme(s) FP6-MOBILITY - Human resources and Mobility in the specific programme for research, technological development and demonstration "Structuring the European Research Area" under the Sixth Framework Programme 2002-2006 Thème(s) MOBILITY-2.1 - Marie Curie Intra-European Fellowships (EIF) Appel à propositions FP6-2002-MOBILITY-5 Voir d’autres projets de cet appel Régime de financement EIF - Marie Curie actions-Intra-European Fellowships Coordinateur CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE Adresse 3, rue michel ange Paris France Voir sur la carte Liens Site web Opens in new window Contribution de l’UE Aucune donnée
