DOI: 10.1016/j.atmosenv.2014.02.025
Scopus记录号: 2-s2.0-84895734279
论文题名: Organic characterisation of PM10 in Cape Verde under Saharan dust influxes
作者: Gonçalves C ; , Alves C ; , Nunes T ; , Rocha S ; , Cardoso J ; , Cerqueira M ; , Pio C ; , Almeida S ; M ; , Hillamo R ; , Teinilä K
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 89 起始页码: 425
结束页码: 432
语种: 英语
英文关键词: Cape Verde archipelago
; GC-MS
; Organic compounds
; Sahara dust
Scopus关键词: Aerosols
; Dust
; Organic compounds
; Paraffins
; Background aerosol
; Cape Verde archipelago
; GC-MS
; Long range transport
; Measurement campaign
; Monosaccharide anhydrides
; Organic compositions
; Organic speciation
; Atmospheric movements
; acid
; acid anhydride
; alkane
; alkanol
; monosaccharide
; organic carbon
; organic compound
; aerosol composition
; archipelago
; concentration (composition)
; cuticle
; dust
; long range transport
; marine atmosphere
; organic compound
; particulate matter
; speciation (chemistry)
; aerosol
; Africa south of the Sahara
; article
; biomass
; chemical composition
; mineral dust
; oxidation
; particulate matter
; plant
; priority journal
; Cape Verde [Macaronesia]
; Praia
; Sao Tiago
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: The current study presents, for the first time, a long-term organic speciation of aerosol at the Cape Verde archipelago. The Cape Verde location, in the Atlantic Ocean, provides a unique laboratory to study background aerosol, long-range transport, aerosol mixing with mineral dust, biomass burning and sea surface components. In order to contribute to a better understanding of this environment, a one-year long measurement campaign was performed in Praia City, Santiago Island. PM10 concentrations (20.5-370μg/m3) and the organic composition of PM10 were influenced by the African dust influxes. The carbonaceous content of PM10 was very low, suggesting that most of the mass has mineral origin. The PM10 composition was essentially characterised by a large variety of organic compounds, which can be grouped into general compound classes, such as n-alkanes, n-alkanols, n-acids and sugars. The n-alkane total concentrations varied from 3.77 to 53.2ng/m3. The n-alkanols distribution showed a significant biogenic contribution whether from microbial origin or from epicuticular plants during African dust outbreaks. The total concentrations of n-alkanoic acids varied from 0.011 to 4.51ng/m3. The lower n-alkenoic acids content, obtained during the periods of long-range transport from Africa, indicated a more aged aerosol. The monosaccharide anhydrides were detected in all samples with a range of concentrations from 2.06 to 12.7ng/m3. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81265
Appears in Collections: 气候变化事实与影响
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作者单位: Centre for Environmental and Marine Studies, Department of Environment and Planning, University of Aveiro, 3810-193 Aveiro, Portugal; University of Cape Verde, Palmarejo Campus, 279 Praia, Cape Verde; Finnish Meteorological Institute, Air Quality Research, Sahaajankatu 20E, FIN-00810 Helsinki, Finland; URSN, IST/ITN, Instituto Superior Técnico, Technical University of Lisbon, Sacavém, Portugal
Recommended Citation:
Gonçalves C,, Alves C,, Nunes T,et al. Organic characterisation of PM10 in Cape Verde under Saharan dust influxes[J]. Atmospheric Environment,2014-01-01,89