The DOI matches its Crossref record; 49 of the 49 references it cites were found in a registry or an index.
Chemical characterization of SOA formed from aqueous-phase reactions of phenols with the triplet excited state of carbonyl and hydroxyl radical
Open accessAbstract
Abstract. Phenolic compounds, which are emitted in significant amounts from biomass burning, can undergo fast reactions in atmospheric aqueous phases to form secondary organic aerosol (aqSOA). In this study, we investigate the reactions of phenol (compound with formula C6H5OH)), guaiacol (2-methoxyphenol), and syringol (2,6-dimethoxyphenol) with two major aqueous-phase oxidants – the triplet excited states of an aromatic carbonyl (3C*) and hydroxyl radical (· OH). We thoroughly characterize the low-volatility species produced from these reactions and interpret their formation mechanisms using aerosol mass spectrometry (AMS), nanospray desorption electrospray ionization mass spectrometry (nano-DESI MS), and ion chromatography (IC). A large number of oxygenated molecules are identified, including oligomers containing up to six monomer units, functionalized monomer and oligomers with carbonyl, carboxyl, and hydroxyl groups, and small organic acid anions (e.g., formate, acetate, oxalate, and malate). The average atomic oxygen-to-carbon (O / C) ratios of phenolic aqSOA are in the range of 0.85–1.23, similar to those of low-volatility oxygenated organic aerosol (LV-OOA) observed in ambient air. The aqSOA compositions are overall similar for the same precursor, but the reactions mediated by 3C* are faster than · OH-mediated reactions and produce more oligomers and hydroxylated species at the point when 50% of the phenolic compound has reacted. Profiles determined using a thermodenuder indicate that the volatility of phenolic aqSOA is influenced by both oligomer content and O / C ratio. In addition, the aqSOA shows enhanced light absorption in the UV–visible region, suggesting that aqueous-phase reactions of phenols may contribute to formation of secondary brown carbon in the atmosphere, especially in regions influenced by biomass burning.
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Self-citationThe formation, properties and impact of secondary organic aerosol: current and emerging issues
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Self-citationField-Deployable, High-Resolution, Time-of-Flight Aerosol Mass Spectrometer
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Self-citationINTERPRETATION OF MASS SPECTRA
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Self-citationLevoglucosan, a tracer for cellulose in biomass burning and atmospheric particles
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Review on recent progress in observations, source identifications and countermeasures of PM2.5
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Metadata
- Authors
- Yu, L., Smith, J., Laskin, A., Anastasio, C., Laskin, J., & Zhang, Q.
- Venue
- Atmospheric Chemistry and Physics
- Publisher
- Copernicus GmbH
- Published
- 2014-12-23
- Volume
- 14
- Issue
- 24
- Pages
- 13801-13816
- ISSN
- 1680-7316 (ISSN-L)
- 1680-7324
- OpenAlex
- W2015948190
- Cited by
- 272
- References
- 49
- FWCI
- 8.61
- Type
- journal article
- Language
- en
- Open access
- gold
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- Yu, L., Smith, J., Laskin, A., Anastasio, C., Laskin, J., & Zhang, Q. (2014). Chemical characterization of SOA formed from aqueous-phase reactions of phenols with the triplet excited state of carbonyl and hydroxyl radical. Atmospheric Chemistry and Physics. https://doi.org/10.5194/acp-14-13801-2014
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