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DOI	10.5194/acp-19-14703-2019
	Predominance of secondary organic aerosol to particle-bound reactive oxygen species activity in fine ambient aerosol
	Zhou J.; Elser M.; Huang R.-J.; Krapf M.; Fröhlich R.; Bhattu D.; Stefenelli G.; Zotter P.; Bruns E.A.; Pieber S.M.; Ni H.; Wang Q.; Wang Y.; Zhou Y.; Chen C.; Xiao M.; Slowik J.G.; Brown S.; Cassagnes L.-E.; Daellenbach K.R.; Nussbaumer T.; Geiser M.; Prévôt A.S.H.; El-Haddad I.; Cao J.; Baltensperger U.; Dommen J.
发表日期	2019
ISSN	16807316
起始页码	14703
结束页码	14720
卷号	19 期号:23
英文摘要	Reactive oxygen species (ROS) are believed to contribute to the adverse health effects of aerosols. This may happen by inhaled particle-bound (exogenic) ROS (PB-ROS) or by ROS formed within the respiratory tract by certain aerosol components (endogenic ROS). We investigated the chemical composition of aerosols and their exogenic ROS content at the two contrasting locations Beijing (China) and Bern (Switzerland). We apportioned the ambient organic aerosol to different sources and attributed the observed water-soluble PB-ROS to them. The oxygenated organic aerosol (OOA, a proxy for secondary organic aerosol, SOA) explained the highest fraction of the exogenic ROS concentration variance at both locations. We also characterized primary and secondary aerosol emissions generated from different biogenic and anthropogenic sources in smog chamber experiments. The exogenic PB-ROS content in the OOA from these emission sources was comparable to that in the ambient measurements. Our results imply that SOA from gaseous precursors of different anthropogenic emission sources is a crucial source of water-soluble PB-ROS and should be additionally considered in toxicological and epidemiological studies in an adequate way besides primary emissions. The importance of PB-ROS may be connected to the seasonal trends in health effects of PM reported by epidemiological studies, with elevated incidences of adverse effects in warmer seasons, which are accompanied by more-intense atmospheric oxidation processes. © 2019 Author(s).
语种	英语
scopus关键词	aerosol; ambient air; anthropogenic source; concentration (composition); health impact; particulate matter; reactive oxygen species; respiratory disease; source apportionment; Beijing [Beijing (ADS)]; Beijing [China]; Bern [Switzerland]; China; Switzerland
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/143995
作者单位	Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen, 5232, Switzerland; Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; Bioenergy Research Group Engineering and Architecture, Lucerne University of Applied Sciences and Arts, Horw, 6048, Switzerland; CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, 100191, China; Institute for Atmospheric and Climate Science, ETH, Zurich, 8092, Switzerland; Institute of Anatomy, University of Bern, Bern, 3012, Switzerland; Graduate School of Global Environmental Studies, Kyoto University, Kyoto, 606-8501, Japan; Automotive Powertrain Technologies, Empa, Dübendorf, 8600, Switzerland; Laboratory for Air Pollution/Environmental Technology, Empa, Dübendorf, 8600, Switzerland; Institute for Atmospheric and Earth System Research, Faculty of Science, University of Helsinki, Helsinki, 00014, Finland
推荐引用方式 GB/T 7714	Zhou J.,Elser M.,Huang R.-J.,et al. Predominance of secondary organic aerosol to particle-bound reactive oxygen species activity in fine ambient aerosol[J],2019,19(23).
APA	Zhou J..,Elser M..,Huang R.-J..,Krapf M..,Fröhlich R..,...&Dommen J..(2019).Predominance of secondary organic aerosol to particle-bound reactive oxygen species activity in fine ambient aerosol.Atmospheric Chemistry and Physics,19(23).
MLA	Zhou J.,et al."Predominance of secondary organic aerosol to particle-bound reactive oxygen species activity in fine ambient aerosol".Atmospheric Chemistry and Physics 19.23(2019).