INVESTIGADORES
MONGE Maria Eugenia
congresos y reuniones científicas
Título:
Photochemistry at interfaces: a source of radicals impacting on aerosol formation and properties
Autor/es:
CHRISTIAN GEORGE; BARBARA D'ANNA; MARIA EUGENIA MONGE; YOAN DUPART
Lugar:
San Francisco
Reunión:
Conferencia; AGU Fall Meeting 2011; 2011
Institución organizadora:
American Geophysical Union
Resumen:
Recent findings confirm the presence of light absorbing organic material (HULIS, biomass burning particles, PAHs) in atmospheric aerosols... but also at the air/ocean interface. The presence of such light absorbing material allows photosensitised processes to occur. The latter may be sources of radicals in the troposphere that may alter its oxidation capacity (as for instance through the formation of HONO) or change the pathways leading to particle formation and ageing. We will exemplify such processes by presenting new data on the generation of radicals from dust particles or at the air/sea interface leading to particle formation in presence of SO2. These are recent findings that are questioning our current understanding of tropospheric photochemistry.
