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| Titel |
Monitoring of organic compounds in aerosols and the gas phase during the EUCAARI-IOP campaign at the Cabauw site |
| VerfasserIn |
R. Holzinger, Frank Herrmann, J. Williams, T. Röckmann |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250027957
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| Zusammenfassung |
| During the EUCAARI-IOP campaign at the Cabauw site, Netherlands, a new instrument has been deployed to monitor the chemical composition of aerosols. The technique is based on impaction aerosol sampling and uses PTR-MS as detector. The chemical compounds are measured in situ in both the gas and the particle phase. A detection limit below 500 pg/m3 has been realized for many compounds. With some modifications the sensitivity can be easily improved by a factor of ~10. The largest detected signal was attributed to nitrate (several micrograms/m3) and is in good agreement with other nitrate measurements simultaneously performed at the same site. Besides organic fragments with the chemical structure of formaldehyde, acetaldehyde, methanol and acetone ~75 other compounds have been detected among these are organic nitrogen and organic halogen compounds. Many compounds exhibit distinct daytime/nighttime patterns and their concentrations vary with respect to transport history. |
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