DOI: 10.1016/j.atmosres.2018.08.011
Scopus记录号: 2-s2.0-85053195204
论文题名: Carbonaceous components and major ions in PM10 from the Amazonian Basin
作者: Custodio D. ; Alves C. ; Jomolca Y. ; de Castro Vasconcellos P.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2019
卷: 215 起始页码: 75
结束页码: 84
语种: 英语
英文关键词: Aerosol composition
; Air quality
; Amazon air pollution
; Amazonia aerosol
; Atmospheric chemistry
Scopus关键词: Aerosols
; Air quality
; Atmospheric chemistry
; Chemical analysis
; Climate models
; Deforestation
; Ions
; Organic carbon
; Aerosol composition
; Agricultural activities
; Air pollution episodes
; Amazonia
; Average concentration
; Carbonaceous components
; Carbonaceous species
; Chemical compositions
; Pollution control
; aerosol composition
; air quality
; atmospheric chemistry
; atmospheric pollution
; biomass burning
; chemical composition
; concentration (composition)
; particulate matter
; Amazon Basin
英文摘要: Air pollution mainly resulting from deforestation and agricultural activities has become one of the major concerns in the Amazonian Basin. A detailed analysis of the PM10 chemical composition is critical for devising pollution control measures and improving climate models. In this study, daily 24-h filter samples were collected and analyzed in different sites of the Amazon Basin between 2008 and 2016 (over 200 samples). The six sampling sites were classified into two groups, one in South Amazonia, a region with strong influence of land occupation, and another in a remote forest region to the North. The high mean concentrations of PM10 and the occurrences of extreme events at the Southern site denote air pollution episodes. High correlations between the temporal trends of PM10 and primary species linked to soil re-suspension and biomass burning highlight the contribution of these sources of air pollution in the region. Significant differences between PM10 in the South and North regions were observed, for which levels of 72.6 ± 66.5 μg m−3 and 8.9 ± 4.2 μg m−3, respectively. The average concentrations of organic carbon (OC) and elemental carbon (EC) in the aerosol were 5.81 ± 4.18 μg m−3, 2.43 ± 1.65 μg m−3 and 5.17 ± 5.54 μg m−3, 0.51 ± 0.41 μg m−3, respectively, for the Southern and Northern Amazonia sampling sites. The aerosol was largely composed of inorganic species in Southern Amazonia, whose carbonaceous matter accounted for 16% of the gravimetrically measured PM10. However, in the forest region, the contribution of carbonaceous species, mainly OC, accounted for >90% and remained more constant throughout the seasons. Na+ was the dominant water soluble ion in samples from the Southern region, followed by SO4 −2, NO3 −, Ca2+ and K+. High levels of carbonate (CC) were also observed for these samples. For the Northern region, SO4 −2 was the dominant soluble ion, followed by K+ and NH4 +. Some of these species exhibited a clear seasonal trend during the study period. This study provides a better understanding of the current state of air pollution in diversified Amazon basin sites. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109050
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: Institute of Chemistry, University of São Paulo, São Paulo, 05508-000, Brazil; Centre for Environmental and Marine Studies, Department of Environment, University of Aveiro, Aveiro, 3810-193, Portugal; Helmholtz-Zentrum Geesthacht (HZG), Institute of Coastal Research, Geesthacht, Germany
Recommended Citation:
Custodio D.,Alves C.,Jomolca Y.,et al. Carbonaceous components and major ions in PM10 from the Amazonian Basin[J]. Atmospheric Research,2019-01-01,215