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| Titel |
Hourly-resolved chemical mass balance of fine aerosols (PM2.5) in Paris (France) during summertime: First results of the EU-FP7-MEGAPOLI program. |
| VerfasserIn |
Jean Sciare, Roland Sarda-Estève, José Nicolas |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250037793
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| Zusammenfassung |
| Within the EU-FP7-MEGAPOLI program, an intensive field experiment has been
performed in the region of Paris (France) during a 1-month period of the summer
2009. Fast measurements of the chemical composition of fine aerosols (PM2.5)
were obtained in Paris using 1) a Particle-into-liquid-sampler (PILS) coupled with
Ion chromatography (IC) for the quantitative determination of the major ions (Cl-,
NO3-, SO42-, Na+, NH4+, K+, Mg2+; Ca2+), 2) an OCEC sunset field instrument
for the measurement of EC and OC, and 3) a PILS coupled with a total Organic
Carbon (TOC) for the determination of WSOC. Hourly reconstruction of PM2.5 was
performed and compared with field measurements of artefact-free PM2.5 performed by
TEOM-FDMS.
Long-range transported Supermicron Sea salts have shown to affect the levels of fine
aerosols during the periods with clean air masses originating from the Atlantic Ocean. Most
of the nitrate aerosols observed during this campaign could also be associated with
supermicron aerosols. Very homogeneous concentrations of ion species were observed in the
region of Paris suggesting a non local origin for these species. Properties of organic aerosols
were inferred using time resolved measurements of EC, OC, WSOC and oxalate. |
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