globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2017.10.007
Scopus记录号: 2-s2.0-85031104313
论文题名:
Distinct high molecular weight organic compound (HMW-OC) types in aerosol particles collected at a coastal urban site
作者: Dall'Osto M; , Healy R; M; , Wenger J; C; , O'Dowd C; , Ovadnevaite J; , Ceburnis D; , Harrison R; M; , Beddows D; C; S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 171
起始页码: 118
结束页码: 125
语种: 英语
英文关键词: ATOFMS ; High molecular weight organic compounds ; Mixing state ; Oligomers ; Sea salt
Scopus关键词: Atmospheric aerosols ; Mass spectrometry ; Molecular weight ; Oligomers ; Optical properties ; Organic compounds ; Photochemical reactions ; Urban growth ; Aerosol time-of-flight mass spectrometries ; ATOFMS ; High molecular weight ; Inorganic particles ; Mixing state ; Primary emissions ; Sea salts ; Simultaneous formation ; Aerosols ; nitric acid derivative ; oligomer ; organic compound ; organic nitrogen ; aerosol ; ambient air ; biomass burning ; molecular analysis ; nitric acid ; organic compound ; organic nitrogen ; particle size ; photochemistry ; sea salt ; urban site ; aerosol ; ambient air ; Article ; biomass ; molecular weight ; particle size ; photochemistry ; priority journal ; seashore ; time of flight mass spectrometry ; urban area ; Cork [County Cork] ; County Cork ; Ireland ; Munster [Ireland]
Scopus学科分类: Environmental Science: Water Science and Technology ; Earth and Planetary Sciences: Earth-Surface Processes ; Environmental Science: Environmental Chemistry
英文摘要: Organic oligomers were discovered in laboratory-generated atmospheric aerosol over a decade ago. However, evidence for the presence of oligomers in ambient aerosols is scarce and mechanisms for their formation have yet to be fully elucidated. In this work, three unique aerosol particle types internally mixed with High molecular weight organic compounds (HMW-OC) species - likely oligomers - were detected in ambient air using single particle Aerosol Time-Of-Flight Mass Spectrometry (ATOFMS) in Cork (Ireland) during winter 2009. These particle types can be described as follows: (1) HMW-OCs rich in organic nitrogen - possibly containing nitrocatechols and nitroguaiacols - originating from primary emissions of biomass burning particles during evening times; (2) HMW-OCs internally mixed with nitric acid, occurring in stagnant conditions during night time; and (3) HMW-OCs internally mixed with sea salt, likely formed via photochemical reactions during day time. The study exemplifies the power of methodologies capable of monitoring the simultaneous formation of organic and inorganic particle-phase reaction products. Primary emissions and atmospheric aging of different types of HMW-OC contributes to aerosol with a range of acidity, hygroscopic and optical properties, which can have different impacts on climate and health. © 2017 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82190
Appears in Collections:气候变化事实与影响

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作者单位: Institute of Marine Sciences (ICM) Consejo Superior de Investigaciones Científicas (CSIC), Pg. Marítim de la Barceloneta 37–49, Barcelona, Spain; School of Physics and Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, Galway, Ireland; Department of Chemistry and Environmental Research Institute, University College Cork, Ireland; National Centre for Atmospheric Sciences, The School of Geography, Earth and Environmental Sciences, The University of Birmigham, Edgbaston, Birmingham, United Kingdom; Department of Environmental Sciences/Centre of Excellence in Environmental Studies, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia; Environmental Monitoring and Reporting Branch, Ontario Ministry of the Environment and Climate Change, Toronto, Canada

Recommended Citation:
Dall'Osto M,, Healy R,M,et al. Distinct high molecular weight organic compound (HMW-OC) types in aerosol particles collected at a coastal urban site[J]. Atmospheric Environment,2017-01-01,171
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