|From||"Gilles Foret" <Gilles.Foret@lisa.u-pec.fr>|
|Date||Mon, 04 May 2020 15:26:16 +0200|
The LISA Laboratory is proposing a PhD studenship on the topic of air quality modelling Title of the thesis: Simulation of the aerosol oxidative potential : a new health related indicator of air quality" The mass of fine particles with a diameter of less than 2.5 µm (PM2.5) has traditionally been used as an indicator of the health impact of particulate matter pollution. Nevertheless, it is well known that the health impact of particulate matter depends on its size and chemical speciation. In particular, carbonaceous species with high oxidizing power and certain transition metals can exert oxidative stress on cells, and promote inflammatory reactions. This oxidative potential (OP) can be characterized in ambient air samples by extracellular tests, and varies according to the source of the aerosol and in particular of organic aerosol. The thesis aims at modelling the oxidative potential of the aerosol and its organic fraction with the CHIMERE air quality model. We seek at determining if and how the spatial and temporal variability of the oxidative potential differs from the mass concentrations of PM2.5 and to quantify its main sources (traffic, residential heating, industry, biogenic, etc.). Such a modelling approach is highly novel has not yet been undertaken in France. This thesis should ultimately contribute to a transformation of air quality management policies through the implementation of a new predictive variable relevant to health exposure in order to provide France with a more effective tool to reduce population exposure. If you are interrested you access the full subject at : http://www.lisa.u-pec.fr/~foret/Met-jobs/ Contact: Dr Gilles Foret LISA (UPEC/UP/CNRS) firstname.lastname@example.org
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