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Enhanced secondary organic aerosol formation due to water uptake by fine particles

Open access
Hennigan, Christopher J., Bergin, Michael H., Dibb, Jack E., Weber, Rodney J.·2008·Geophysical Research Letters

Abstract

This study characterizes the partitioning behavior of a significant fraction of the ambient organic aerosol through simultaneous measurements of gas and particle water‐soluble organic carbon (WSOC). During the summer in Atlanta, WSOC gas/particle partitioning showed a strong RH dependence that was attributed to particulate liquid water. At elevated RH levels (>∼70%), a significant increase in WSOC partitioning to the particle phase was observed and followed the predicted water uptake by fine particles. The enhancement in particle‐phase partitioning translated to increased median particle WSOC concentrations ranging from 0.3–0.9 μ g C m−3. The results provide a detailed overview of the WSOC partitioning behavior in the summertime in an urban region dominated by biogenic emissions, and indicate that secondary organic aerosol formation involving partitioning to liquid water may be a significant aerosol formation route that is generally not considered.

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Metadata

Authors
Hennigan, C. J., Bergin, M. H., Dibb, J. E., & Weber, R. J.
Venue
Geophysical Research Letters
Published
2008-09
Volume
35
Issue
18
ISSN
  • 0094-8276 (ISSN-L)
  • 1944-8007
OpenAlex
W2132186676
Cited by
193
References
0
FWCI
6.34
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Enhanced secondary organic aerosol formation due to water uptake by fine particles. https://app.cochat.ai/papers/10.1029/2008gl035046
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Hennigan, C. J., Bergin, M. H., Dibb, J. E., & Weber, R. J. (2008). Enhanced secondary organic aerosol formation due to water uptake by fine particles. Geophysical Research Letters. https://doi.org/10.1029/2008gl035046

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.