DOI: 10.1016/j.atmosenv.2014.02.051
Scopus记录号: 2-s2.0-84895458416
论文题名: Effects of anthropogenic emissions on the molecular composition of urban organic aerosols: An ultrahigh resolution mass spectrometry study
作者: Kourtchev I ; , O'Connor I ; P ; , Giorio C ; , Fuller S ; J ; , Kristensen K ; , Maenhaut W ; , Wenger J ; C ; , Sodeau J ; R ; , Glasius M ; , Kalberer M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 89 起始页码: 525
结束页码: 532
语种: 英语
英文关键词: NanoESI
; Nitroaromatic
; Organic aerosol
; Organonitrates
; Organosulfates
Scopus关键词: Aromatic compounds
; Atmospheric aerosols
; Fuels
; Liquid chromatography
; Nitrogen
; Sulfur
; Sulfur dioxide
; Unsaturated fatty acids
; Nano-ESI
; Nitroaromatic
; Organic aerosol
; Organonitrates
; Organosulfates
; Mass spectrometry
; aromatic compound
; aromatic nitro compound
; fatty acid
; fuel
; nitrate
; nitrogen
; sulfur
; sulfur dioxide
; aerosol
; anthropogenic effect
; anthropogenic source
; atmospheric pollution
; environmental effect
; fatty acid
; human activity
; liquid chromatography
; mass spectrometry
; sulfur dioxide
; traffic emission
; urban site
; aerosol
; air pollution
; article
; chemical composition
; circadian rhythm
; electrospray mass spectrometry
; liquid chromatography
; mass spectrometry
; particulate matter
; priority journal
; quadrupole mass spectrometry
; quadrupole time of flight mass spectrometry
; secondary organic aerosol
; traffic
; ultrahigh resolution 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: Identification of the organic composition of atmospheric aerosols is necessary to develop effective air pollution mitigation strategies. However, the majority of the organic aerosol mass is poorly characterized and its detailed analysis is a major analytical challenge. In this study, we applied state-of-the-art direct infusion nano-electrospray (nanoESI) ultrahigh resolution mass spectrometry (UHRMS) and liquid chromatography ESI Quadrupole Time-of-Flight (Q-TOF) MS for the analysis of the organic fraction of fine particulate matter (PM2.5) collected at an urban location in Cork, Ireland. Comprehensive mass spectral data evaluation methods (e.g., Kendrick Mass Defect and Van Krevelen) were used to identify compound classes and mass distributions of the detected species. Up to 850 elemental formulae were identified in negative mode nanoESI-UHR-MS. Nitrogen and/or sulphur containing organic species contributed up to 40% of the total identified formulae and exhibited strong diurnal variations suggesting the importance of night-time NO3 chemistry at the site. The presence of a large number of oxidised aromatic and nitroaromatic compounds in the samples indicated a strong anthropogenic influence, i.e., from traffic emissions and domestic solid fuel (DSF) burning. Most of the identified biogenic secondary organic aerosol (SOA) compounds are later-generation nitrogen- and sulphur-containing products, indicating that SOA composition is strongly affected by anthropogenic species such as NOx and SO2. Unsaturated and saturated C12-C20 fatty acids were found to be the most abundant homologs with a composition reflecting a primary marine origin. The results of this work demonstrate that the studied site is a very complex environment affected by a variety of anthropogenic activities and natural sources. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81143
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom; Department of Chemistry and Environmental Research Institute, University College Cork, Cork, Ireland; Department of Chemistry and iNANO, Aarhus University, Aarhus DK-8000, Denmark; Department of Analytical Chemistry, Ghent University, Krijgslaan 281, S12, BE-9000 Ghent, Belgium; Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, BE-2610 Antwerp, Belgium
Recommended Citation:
Kourtchev I,, O'Connor I,P,et al. Effects of anthropogenic emissions on the molecular composition of urban organic aerosols: An ultrahigh resolution mass spectrometry study[J]. Atmospheric Environment,2014-01-01,89