气候变化领域集成服务门户(CCPortal): Chemical transformations in monoterpene-derived organic aerosol enhanced by inorganic composition

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DOI	10.1038/s41612-018-0058-0
	Chemical transformations in monoterpene-derived organic aerosol enhanced by inorganic composition
	Riva M.; Heikkinen L.; Bell D.M.; Peräkylä O.; Zha Q.; Schallhart S.; Rissanen M.P.; Imre D.; Petäjä T.; Thornton J.A.; Zelenyuk A.; Ehn M.
发表日期	2019
ISSN	23973722
卷号	2 期号:1
英文摘要	Secondary organic aerosol (SOA) is known to impact both climate and air quality, yet molecular-level composition measurements remain challenging, hampering our understanding of SOA formation and evolution. Here, we reveal the importance of underestimated reaction pathways for the (trans)formation of SOA from monoterpenes, one of the largest SOA precursors globally. Utilizing mass spectrometric techniques to achieve a comprehensive characterization of molecular-level changes in the SOA, we were able to link the appearance of high-molecular weight (HMW) organic molecules to the concentration and level of neutralization of particulate sulfate. Interestingly, this oligomerization coincided with a decrease of highly oxygenated molecules (HOMs). Our findings highlight the role of particle-phase processing, and the underestimated importance of sulfate aerosol for monoterpene-SOA formation. The observations of these processes directly in the atmosphere reveal the need to account for the formation of HMW oligomers to fully understand the physicochemical properties of organic aerosol. © 2019, The Author(s).
语种	英语
scopus关键词	aerosol composition; air quality; chemical composition; concentration (composition); formation mechanism; inorganic compound; monoterpene; particulate matter; physicochemical property; sulfate
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178122
作者单位	Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, Helsinki, 00014, Finland; Pacific Northwest National Laboratory, Richland, WA 99354, United States; Imre Consulting, Richland, WA 99352, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA 98195, United States; Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, Villeurbanne, 69626, France; Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen, 5232, Switzerland
推荐引用方式 GB/T 7714	Riva M.,Heikkinen L.,Bell D.M.,et al. Chemical transformations in monoterpene-derived organic aerosol enhanced by inorganic composition[J],2019,2(1).
APA	Riva M..,Heikkinen L..,Bell D.M..,Peräkylä O..,Zha Q..,...&Ehn M..(2019).Chemical transformations in monoterpene-derived organic aerosol enhanced by inorganic composition.npj Climate and Atmospheric Science,2(1).
MLA	Riva M.,et al."Chemical transformations in monoterpene-derived organic aerosol enhanced by inorganic composition".npj Climate and Atmospheric Science 2.1(2019).