Molecular characterization of gaseous and particulate phases of primary and secondary biomass burning emissions and understanding of their toxicity

id="offer-description" class="ecl-u-type-heading-2 ecl-u-mt-none ecl-u-mb-l">Offer Description Knowledge of particulate matter (PM) in ambient air is essential to assess health and climate impacts of air pollution. Their sources, formation processes and chemical composition are still poorly known. Biomass burning accounts for a significant part of the primary emissions of fine PM in ambient air notably in winter period due to wood combustion used for residential heating purposes. This source also emits large quantities of volatile and semi-volatile organic species leading to the formation, via (photo-)chemical processes, of secondary organic aerosols (SOA) accounting for a substantial part of fine PM concentrations. However, SOA formation yields from this source, or from the corresponding SOA precursors emitted, are still poorly documented in the literature especially for night-time processes (involving nitrate radical). Moreover, the toxicological potential of primary and aged biomass burning emissions, or related SOA, is also poorly understood and notably the links between biological responses and particle physicochemical properties. In this context, the main objectives of this post-doctoral work are to study and understand the SOA formation processes from residential wood-burning appliance emissions (logwood stove) (WOODNIGHT project). To do so, logwood stove emissions have been aged using an oxidant flow reactor (OFR) under different oxidation conditions (OH or NO3 radica