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dc.contributor.authorAkherati, Ali
dc.contributor.authorHe, Yicong
dc.contributor.authorCoggon, Matthew M.
dc.contributor.authorKoss, Abigail
dc.contributor.authorHodshire, Anna
dc.contributor.authorSekimoto, Kanako
dc.contributor.authorWarneke, Carsten
dc.contributor.authorde Gouw, Joost A.
dc.contributor.authorYee, Lindsay D.
dc.contributor.authorSeinfeld, John H.
dc.contributor.authorOnasch, Timothy B.
dc.contributor.authorHerndon, Scott C.
dc.contributor.authorKnighton, Walter B.
dc.contributor.authorCappa, Christopher David
dc.contributor.authorKleeman, Michael J.
dc.contributor.authorYim, Christopher Y.
dc.contributor.authorKroll, Jesse H.
dc.contributor.authorPierce, Jeffrey R.
dc.contributor.authorJathar, Shantanu H.
dc.identifier.citationAkherati, Ali, Yicong He, Matthew M. Coggon, Abigail R. Koss, Anna L. Hodshire, Kanako Sekimoto, Carsten Warneke, et al. “Oxygenated Aromatic Compounds Are Important Precursors of Secondary Organic Aerosol in Biomass-Burning Emissions.” Environmental Science & Technology 54, no. 14 (June 19, 2020): 8568–8579. doi:10.1021/acs.est.0c01345.en_US
dc.description.abstractBiomass burning is the largest combustion-related source of volatile organic compounds (VOCs) to the atmosphere. We describe the development of a state-of-the-science model to simulate the photochemical formation of secondary organic aerosol (SOA) from biomass-burning emissions observed in dry (RH <20%) environmental chamber experiments. The modeling is supported by (i) new oxidation chamber measurements, (ii) detailed concurrent measurements of SOA precursors in biomass-burning emissions, and (iii) development of SOA parameters for heterocyclic and oxygenated aromatic compounds based on historical chamber experiments. We find that oxygenated aromatic compounds, including phenols and methoxyphenols, account for slightly less than 60% of the SOA formed and help our model explain the variability in the organic aerosol mass (R2 = 0.68) and O/C (R2 = 0.69) enhancement ratios observed across 11 chamber experiments. Despite abundant emissions, heterocyclic compounds that included furans contribute to ∼20% of the total SOA. The use of pyrolysis-temperature-based or averaged emission profiles to represent SOA precursors, rather than those specific to each fire, provide similar results to within 20%. Our findings demonstrate the necessity of accounting for oxygenated aromatics from biomass-burning emissions and their SOA formation in chemical mechanisms.en_US
dc.titleOxygenated Aromatic Compounds are Important Precursors of Secondary Organic Aerosol in Biomass-Burning Emissionsen_US
mus.citation.journaltitleEnvironmental Science & Technologyen_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentChemistry & Biochemistry.en_US
mus.relation.universityMontana State University - Bozemanen_US

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