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| Titel |
Primary and secondary organic aerosol origin by combined gas-particle phase source apportionment |
| VerfasserIn |
M. Crippa, F. Canonaco, J. G. Slowik, I. Haddad, P. F. DeCarlo, C. Mohr, M. F. Heringa, R. Chirico, N. Marchand, B. Temime-Roussel, E. Abidi, L. Poulain, A. Wiedensohler, U. Baltensperger, A. S. H. Prévôt |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 13, no. 16 ; Nr. 13, no. 16 (2013-08-26), S.8411-8426 |
| Datensatznummer |
250085649
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| Publikation (Nr.) |
 copernicus.org/acp-13-8411-2013.pdf |
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| Zusammenfassung |
| Secondary organic aerosol (SOA), a prominent fraction of particulate organic
mass (OA), remains poorly constrained. Its formation involves several
unknown precursors, formation and evolution pathways and multiple natural
and anthropogenic sources. Here a combined gas-particle phase source
apportionment is applied to wintertime and summertime data collected in the
megacity of Paris in order to investigate SOA origin during both seasons.
This was possible by combining the information provided by an aerosol mass
spectrometer (AMS) and a proton transfer reaction mass spectrometer
(PTR-MS). A better constrained apportionment of primary OA (POA) sources is
also achieved using this methodology, making use of gas-phase tracers. These
tracers made possible the discrimination between biogenic and
continental/anthropogenic sources of SOA. We found that continental SOA was
dominant during both seasons (24–50% of total OA), while contributions
from photochemistry-driven SOA (9% of total OA) and marine emissions
(13% of total OA) were also observed during summertime. A semi-volatile
nighttime component was also identified (up to 18% of total OA during
wintertime). This approach was successfully applied here and implemented in
a new source apportionment toolkit. |
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