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| Titel |
Aerosol Mass Spectrometric Investigations of the formation of SOA from NO3 + Isoprene, Limonene, and β-Pinene Reactions |
| VerfasserIn |
A. A. Mensah, A. Kiendler-Scharr |
| 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 |
250023527
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| Zusammenfassung |
| We present aerosol mass spectrometric (AMS) results of NO3 oxidation experiments in the
atmospheric simulation chamber at Research Centre Juelich. Three volatile organic
compounds (VOCs) of biogenic origin, isoprene, limonene and β-pinene, reacted separately
with NO3 at atmospheric relevant conditions. Initial VOC concentrations were between 10
ppb and 15 ppb and the NO3 concentrations did not exceed 100 ppb. Aerosol particle mass
yields ranged from 10% for isoprene to ~50% for β-pinene. We identify significant fractions
of the produced SOA as organic nitrate compounds. The comparison of AMS results to
results from Thermal Dissociation – Laser Induced Fluorescence (TD-LIF) shows a high
correlation of aerosol particle mass evolution with gas phase organic nitrate formation. We
will present specific mass spectrometric features of the SOA formed by NO3 oxidation of
monoterpenes with focus on high resolution mass spectral results. Furthermore, we will
discuss the atmospheric relevance of NO3 initiated SOA formation from biogenic VOC. |
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