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Crippa, M.* ; DeCarlo, P.F.* ; Slowik, J.G.* ; Mohr, C.* ; Heringa, M.F.* ; Chirico, R.* ; Poulain, L.* ; Freutel, F.* ; Sciare, J.* ; Cozic, J.* ; di Marco, C.F.* ; Elsasser, M. ; Nicolas, J.B.* ; Marchand, N.* ; Abidi, E.* ; Wiedensohler, A.* ; Drewnick, F.* ; Schneider, J.* ; Borrmann, S.* ; Nemitz, E.* ; Zimmermann, R. ; Jaffrezo, J.-L.* ; Prevot, A.S.H.* ; Baltensperger, U.*

Wintertime aerosol chemical composition and source apportionment of the organic fraction in the metropolitan area of Paris.

Atmos. Chem. Phys. 13, 961-981 (2013)
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The effect of a post-industrial megacity on local and regional air quality was assessed via a month-long field measurement campaign in the Paris metropolitan area during winter 2010. Here we present source apportionment results from three aerosol mass spectrometers and two aethalometers deployed at three measurement stations within the Paris region. Submicron aerosol composition is dominated by the organic fraction (30-36%) and nitrate (28-29%), with lower contributions from sulfate (14-16%), ammonium (12-14%) and black carbon (7-13%). Organic source apportionment was performed using positive matrix factorization, resulting in a set of organic factors corresponding both to primary emission sources and secondary production. The dominant primary sources are traffic (11-15% of organic mass), biomass burning (13-15%) and cooking (up to 35% during meal hours). Secondary organic aerosol contributes more than 50% to the total organic mass and includes a highly oxidized factor from indeterminate and/or diverse sources and a less oxidized factor related to wood burning emissions. Black carbon was apportioned to traffic and wood burning sources using a model based on wavelength-dependent light absorption of these two combustion sources. The time series of organic and black carbon factors from related sources were strongly correlated. The similarities in aerosol composition, total mass and temporal variation between the three sites suggest that particulate pollution in Paris is dominated by regional factors, and that the emissions from Paris itself have a relatively low impact on its surroundings.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Positive Matrix Factorization ; Factor-analytic Models ; Mass-spectrometer Data ; Particulate Air-pollution ; New-york-city ; High-resolution ; Mexico-city ; Elemental Carbon ; Light-absorption ; Molecular Markers
Language
Publication Year 2013
HGF-reported in Year 2013
ISSN (print) / ISBN 1680-7316
e-ISSN 1680-7324
Journal Atmospheric Chemistry and Physics
Quellenangaben Volume: 13, Issue: 2, Pages: 961-981 Article Number: , Supplement: ,
Publisher European Geosciences Union (EGU) ; Copernicus
Reviewing status Peer reviewed
Institute(s) Cooperation Group Comprehensive Molecular Analytics (CMA)
POF-Topic(s) 30202 - Environmental Health
Research field(s) Environmental Sciences
PSP Element(s) G-504500-001
DOI 10.5194/acp-13-961-2013
WOS ID WOS:000314172200028
Scopus ID 84873045252
Erfassungsdatum 2013-03-21
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