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A missing sink for gas‐phase glyoxal in Mexico City: Formation of secondary organic aerosol
Open accessAbstract
The sources of secondary organic aerosol (SOA) are highly uncertain. Direct measurements of gas‐phase glyoxal in Mexico City are compared to experimentally constrained model predictions. Observed glyoxal concentrations are found significantly below those predicted. Additional glyoxal sources are likely and would increase these differences; an additional glyoxal sink must be operative. The model‐measurement differences are fully resolved by a sink parameterized from aerosol parameters as either (1) irreversible uptake to aerosol surface area (uptake coefficient γ≈ 0.0037); reversible partitioning to (2) aerosol liquid water (effective Henry's law coefficient Heff≈ 4 × 10 9 M atm−1), or (3) the oxygenated organic aerosol phase (activity coefficient ζ≈ 6 × 10−9); (4) a combination of the above. The missing sink has the potential to determine 70–95% of the atmospheric lifetime of glyoxal. The glyoxal imbalance corresponds to several μ g m−3 of equivalent SOA mass, and can explain at least 15% of the SOA formation in Mexico City.
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Cited by
Evolution of Organic Aerosols in the Atmosphere
Jimenez, J. L., Canagaratna, M. R., Donahue, N. M., Prevot, A. S. H., Zhang, Q., Kroll, J. H., DeCarlo, P. F., Allan, J. D., Coe, H., Ng, N. L., et al. (2009) · Science · doi:10.1126/science.1180353 · Cited by 4,167
Self-citationFormation of Urban Fine Particulate Matter
Zhang, R., Wang, G., Guo, S., Zamora, M. L., Ying, Q., Lin, Y., Wang, W., Hu, M., & Wang, Y. (2015) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00067 · Cited by 1,426
Tai, A. P. K., Mickley, L. J., & Jacob, D. J. (2010) · Atmospheric Environment · doi:10.1016/j.atmosenv.2010.06.060 · Cited by 1,048
A two-dimensional volatility basis set: 1. organic-aerosol mixing thermodynamics
Donahue, N. M., Epstein, S. A., Pandis, S. N., & Robinson, A. L. (2011) · Atmospheric Chemistry and Physics · doi:10.5194/acp-11-3303-2011 · Cited by 890
Atmospheric composition change – global and regional air quality
Monks, P. S., Granier, C., Fuzzi, S., Stohl, A., Williams, M. L., Akimoto, H., Amann, M., Baklanov, A., Baltensperger, U., Bey, I., et al. (2009) · Atmospheric Environment · doi:10.1016/j.atmosenv.2009.08.021 · Cited by 872
Metadata
- Authors
- Volkamer, R., San Martini, F., Molina, L. T., Salcedo, D., Jimenez, J. L., & Molina, M. J.
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 2007-10
- Volume
- 34
- Issue
- 19
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W2035618697
- Cited by
- 457
- References
- 0
- FWCI
- 18.22
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: A missing sink for gas‐phase glyoxal in Mexico City: Formation of secondary organic aerosol. https://app.cochat.ai/papers/10.1029/2007gl030752
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- Volkamer, R., San Martini, F., Molina, L. T., Salcedo, D., Jimenez, J. L., & Molina, M. J. (2007). A missing sink for gas‐phase glyoxal in Mexico City: Formation of secondary organic aerosol. Geophysical Research Letters. https://doi.org/10.1029/2007gl030752
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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