DOI: 10.1016/j.atmosres.2018.08.002
Scopus记录号: 2-s2.0-85051387474
论文题名: Passive monitoring of particulate matter and gaseous pollutants in Fogo Island, Cape Verde
作者: Alves C.A. ; Candeias C. ; Nunes T.V. ; Tomé M.J.C. ; Vicente E.D. ; Ávila P.F. ; Rocha F.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 214 起始页码: 250
结束页码: 262
语种: 英语
英文关键词: Acid gases
; Dust deposition
; Ions
; Morphology
; OC and EC
; SO2
; VOCs
Scopus关键词: Air quality
; Deposition rates
; Fog
; Industrial emissions
; Ions
; Morphology
; Nitric acid
; Organic carbon
; Scanning electron microscopy
; Silica
; Sodium chloride
; Sulfur compounds
; Toluene
; Volatile organic compounds
; Acid gas
; Air quality monitoring
; Atmospheric constituents
; Biomass burning emissions
; Dust deposition
; Long range transport
; OC and EC
; Toluene/benzene ratio
; Dust
; acid deposition
; air quality
; concentration (composition)
; deposition
; dust
; ion
; particulate matter
; pollutant transport
; pollution monitoring
; scanning electron microscopy
; sulfur dioxide
; volatile organic compound
; Cape Verde [Macaronesia]
; Fogo
英文摘要: An air quality monitoring campaign by passive sampling techniques was carried out, for the first time, between November 2016 and January 2017 on the Cape Verdean island of Fogo, whose volcanic mountain rises up to 2829 m. Levels of SO2 and acid gases (HF, HCl, HNO3, H2SO4 and H3PO4) were, in most cases, below the detection limits. Alkylpentanes, hexane, cycloalkanes and toluene were the dominant volatile organic compounds. The m,p-xylene/ethylbenzene ratios revealed that air masses arriving at Cape Verde have been subjected to significant aging processes. High toluene/benzene ratios suggested extra sources of toluene in addition to vehicle emissions. Deposition rates of total settleable dust ranged from 23 to 155 mg/m2/day. On average, organic carbon accounted for 15.6% of the dust mass, whereas elemental carbon was generally undetected. Minerals comprised the dominant mass fraction. The dust levels were mostly affected by two main airflows: the westerlies and the Saharan Air Layer. These air masses contributed to the transport of mineral dust from desert regions, secondary inorganic constituents (SO4 2−, NO3 − and NH4 +) and tracers of biomass burning emissions, such as potassium. Sea salt represented 12% of the mass of settleable dust. Scanning electron microscope observations of several particles with different compositions, shapes and sizes revealed high silica mass fractions in all samples, as well as variable contents of carbonates, sulphates, aluminosilicates, Fe, Ti, F and NaCl, suggesting that, in addition to the already mentioned sources, dust is likely linked to industrial emissions in the northern and north-western coast of the African continent. Although some atmospheric constituents presented higher concentrations near the crater, the small fumarolic activity still present after cessation of the eruption in February 2015 has a limited impact on air quality, which is most affected by long range transport and some local sources at specific locations. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108747
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, University of Aveiro, Aveiro, 3810-193, Portugal; Geobiosciences, Geotechnologies and Geoengineering Research Centre (GeoBioTec), Department of Geosciences, University of Aveiro, Aveiro, 3810-193, Portugal; EPIUnit, Epidemiology Research Unit, National Institute of Health, R. das Taipas n°135, Porto, 4050-600, Portugal; School of Technology and Management, Polytechnic Institute of Viana do Castelo, Av. do Atlântico, Apart. 574, Viana do Castelo, 4900-348, Portugal; National Laboratory of Energy and Geology (LNEG), R. da Amieira, Apart. 1089, S. Mamede de Infesta, 4466-901, Portugal
Recommended Citation:
Alves C.A.,Candeias C.,Nunes T.V.,et al. Passive monitoring of particulate matter and gaseous pollutants in Fogo Island, Cape Verde[J]. Atmospheric Research,2018-01-01,214