The DOI matches its Crossref record; 62 of the 62 references it cites were found in a registry or an index.
Relationship between Oxidation Level and Optical Properties of Secondary Organic Aerosol
Abstract
Brown carbon (BrC), which may include secondary organic aerosol (SOA), can be a significant climate-forcing agent via its optical absorption properties. However, the overall contribution of SOA to BrC remains poorly understood. Here, correlations between oxidation level and optical properties of SOA are examined. SOA was generated in a flow reactor in the absence of NOx by OH oxidation of gas-phase precursors used as surrogates for anthropogenic (naphthalene, tricyclo[5.2.1.0(2,6)]decane), biomass burning (guaiacol), and biogenic (α-pinene) emissions. SOA chemical composition was characterized with a time-of-flight aerosol mass spectrometer. SOA mass-specific absorption cross sections (MAC) and refractive indices were calculated from real-time cavity ring-down photoacoustic spectrometry measurements at 405 and 532 nm and from UV-vis spectrometry measurements of methanol extracts of filter-collected particles (300 to 600 nm). At 405 nm, SOA MAC values and imaginary refractive indices increased with increasing oxidation level and decreased with increasing wavelength, leading to negligible absorption at 532 nm. Real refractive indices of SOA decreased with increasing oxidation level. Comparison with literature studies suggests that under typical polluted conditions the effect of NOx on SOA absorption is small. SOA may contribute significantly to atmospheric BrC, with the magnitude dependent on both precursor type and oxidation level.
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Cites
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Wang, X., Heald, C. L., Ridley, D. A., Schwarz, J. P., Spackman, J. R., Perring, A. E., Coe, H., Liu, D., & Clarke, A. D. (2014) · Atmospheric Chemistry and Physics · doi:10.5194/acp-14-10989-2014 · Cited by 323
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Aging of Atmospheric Brown Carbon Aerosol
Hems, R. F., Schnitzler, E. G., Liu-Kang, C., Cappa, C. D., & Abbatt, J. P. D. (2021) · ACS Earth and Space Chemistry · doi:10.1021/acsearthspacechem.0c00346 · Cited by 294
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Metadata
- Authors
- Lambe, A. T., Cappa, C. D., Massoli, P., Onasch, T. B., Forestieri, S. D., Martin, A. T., Cummings, M. J., Croasdale, D. R., Brune, W. H., Worsnop, D. R., & Davidovits, P.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-06-06
- Volume
- 47
- Issue
- 12
- Pages
- 6349-6357
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W1995167560
- Cited by
- 338
- References
- 62
- FWCI
- 14.28
- Type
- journal article
- Language
- en
- Open access
- closed
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