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Secondary Organic Aerosol Formation from Isoprene Photooxidation
Abstract
Recent work has shown that the atmospheric oxidation of isoprene (2-methyl-1,3-butadiene, C5H8) leads to the formation of secondary organic aerosol (SOA). In this study, the mechanism of SOA formation by isoprene photooxidation is comprehensively investigated, by measurements of SOA yields over a range of experimental conditions, namely isoprene and NOx concentrations. Hydrogen peroxide is used as the radical precursor, substantially constraining the observed gas-phase chemistry; all oxidation is dominated by the OH radical, and organic peroxy radicals (RO2) react only with HO2 (formed in the OH + H2O2 reaction) or NO concentrations, including NOx-free conditions. At high NOx, yields are found to decrease substantially with increasing [NOx], indicating the importance of RO2 chemistry in SOA formation. Under low-NOx conditions, SOA mass is observed to decay rapidly, a result of chemical reactions of semivolatile SOA components, most likely organic hydroperoxides.
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Citations
Cited by
Coupled Partitioning, Dilution, and Chemical Aging of Semivolatile Organics
Donahue, N. M., Robinson, A. L., Stanier, C. O., & Pandis, S. N. (2006) · Environmental Science & Technology · doi:10.1021/es052297c · Cited by 1,525
Reactive intermediates revealed in secondary organic aerosol formation from isoprene
Surratt, J. D., Chan, A. W. H., Eddingsaas, N. C., Chan, M., Loza, C. L., Kwan, A. J., Hersey, S. P., Flagan, R. C., Wennberg, P. O., & Seinfeld, J. H. (2010) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0911114107 · Cited by 1,081
Self-citationA review of Secondary Organic Aerosol (SOA) formation from isoprene
Carlton, A. G., Wiedinmyer, C., & Kroll, J. H. (2009) · Atmospheric Chemistry and Physics · doi:10.5194/acp-9-4987-2009 · Cited by 912
Self-citationChemistry and the Linkages between Air Quality and Climate Change
von Schneidemesser, E., Monks, P. S., Allan, J. D., Bruhwiler, L., Forster, P., Fowler, D., Lauer, A., Morgan, W. T., Paasonen, P., Righi, M., et al. (2015) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00089 · Cited by 522
CHIMERE 2013: a model for regional atmospheric composition modelling
Menut, L., Bessagnet, B., Khvorostyanov, D., Beekmann, M., Blond, N., Colette, A., Coll, I., Curci, G., Foret, G., Hodzic, A., et al. (2013) · Geoscientific Model Development · doi:10.5194/gmd-6-981-2013 · Cited by 517
Metadata
- Authors
- Kroll, J. H., Ng, N. L., Murphy, S. M., Flagan, R. C., & Seinfeld, J. H.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-02-15
- Volume
- 40
- Issue
- 6
- Pages
- 1869-1877
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W1978848700
- Cited by
- 782
- References
- 0
- FWCI
- 27.02
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kroll, J. H., Ng, N. L., Murphy, S. M., Flagan, R. C., & Seinfeld, J. H. (2006). Secondary Organic Aerosol Formation from Isoprene Photooxidation. Environmental Science & Technology. https://doi.org/10.1021/es0524301
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