| Literature DB >> 29440409 |
Haofei Zhang1,2, Lindsay D Yee3, Ben H Lee4, Michael P Curtis5, David R Worton3,6, Gabriel Isaacman-VanWertz3, John H Offenberg7, Michael Lewandowski7, Tadeusz E Kleindienst7, Melinda R Beaver7, Amara L Holder8, William A Lonneman7, Kenneth S Docherty9, Mohammed Jaoui7, Havala O T Pye7, Weiwei Hu10,11, Douglas A Day10,11, Pedro Campuzano-Jost10,11, Jose L Jimenez10,11, Hongyu Guo12, Rodney J Weber12, Joost de Gouw11,13, Abigail R Koss11,13, Eric S Edgerton14, William Brune15, Claudia Mohr4, Felipe D Lopez-Hilfiker4, Anna Lutz16, Nathan M Kreisberg6, Steve R Spielman6, Susanne V Hering6, Kevin R Wilson17, Joel A Thornton4, Allen H Goldstein1,18.
Abstract
The chemical complexity of atmospheric organic aerosol (OA) has caused substantial uncertainties in understanding its origins and environmental impacts. Here, we provide constraints on OA origins through compositional characterization with molecular-level details. Our results suggest that secondary OA (SOA) from monoterpene oxidation accounts for approximately half of summertime fine OA in Centreville, AL, a forested area in the southeastern United States influenced by anthropogenic pollution. We find that different chemical processes involving nitrogen oxides, during days and nights, play a central role in determining the mass of monoterpene SOA produced. These findings elucidate the strong anthropogenic-biogenic interaction affecting ambient aerosol in the southeastern United States and point out the importance of reducing anthropogenic emissions, especially under a changing climate, where biogenic emissions will likely keep increasing.Entities:
Keywords: aerosol source apportionment; biogenic volatile organic compound oxidation; nitrogen oxides
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Year: 2018 PMID： 29440409 PMCID： PMC5834703 DOI： 10.1073/pnas.1717513115
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205