DOI: 10.1016/j.atmosenv.2013.11.012
Scopus记录号: 2-s2.0-84888414746
论文题名: Significance of wet deposition to removal of atmospheric particulate matter and polycyclic aromatic hydrocarbons: A case study in Guangzhou, China
作者: Guo L ; -C ; , Bao L ; -J ; , She J ; -W ; , Zeng E ; Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 83 起始页码: 136
结束页码: 144
语种: 英语
英文关键词: Particulate matter
; Polycyclic aromatic hydrocarbons
; Removal capacity
; Washout ratio
; Wet deposition
Scopus关键词: Air quality
; Deposition
; Energy utilization
; Naphthalene
; Particles (particulate matter)
; Pollution
; Atmospheric particulate matter
; Particulate Matter
; Particulate organic carbon
; Polycyclic aromatic hydrocarbons (PAHS)
; Removal capacity
; United States environmental protection agency
; Washout ratios
; Wet deposition
; Polycyclic aromatic hydrocarbons
; naphthalene
; organic carbon
; polycyclic aromatic hydrocarbon
; rain
; anthropogenic source
; concentration (composition)
; dissolved organic carbon
; emission control
; fuel consumption
; metropolitan area
; naphthalene
; PAH
; particulate matter
; pollutant removal
; rainwater
; sampling
; seasonality
; total organic carbon
; wet deposition
; air quality
; article
; atmosphere
; China
; dry deposition
; energy consumption
; government
; particulate matter
; pollutant
; priority journal
; seasonal variation
; total organic carbon
; urban area
; waste component removal
; water sampling
; wet deposition
; China
; Guangdong
; Guangzhou
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: Rainwater samples were simultaneously collected from three locations in Guangzhou, a mega metropolitan center in South China, during the entire year of 2010, and analyzed for particulate matter (PM), total organic carbon and polycyclic aromatic hydrocarbons (PAHs), with the objectives of assessing the seasonality of washout effects and efficiency for removal of pollutants from the atmosphere by wet deposition. The contents of PM, particulate organic carbon, and dissolved organic carbon were in the ranges of 0.74-420 (average: 8.1mgL-1), 0.16-40 (average: 1.3mgL-1), and 0.34-6.9mgL-1 (average: 1.4mgL-1), respectively. Concentrations of σ15PAH (sum of the 16 priority PAH compounds defined by the United States Environmental Protection Agency minus naphthalene) in wet deposition samples ranged from 39 to 1580ngL-1 with an average of 170ngL-1. The PAH concentration levels were slightly abated compared to those acquired previously in Guangzhou during the year of 2005, probably indicating a favorable change of energy consumption patterns in the region. There were moderately significant negative correlations between washout ratios and rainfall intensities (0-4.3mmh-1). The total annual fluxes of wet and dry depositions combined for PM and PAHs in the urban area of Guangzhou were 34gm-2yr-1 and 6.0×102μgm-2yr-1 with 50 and 57% being contributed from wet deposition, respectively. The monthly capacity for removal (CR) of PM and PAHs (calculated as the wet deposition flux dividing the total flux) varied widely with different months, and was lower during the dry weather season (January-March and October-December) than during the wet weather season (April-September). Finally, the air quality index related to PM10 was negatively correlated to CR values of PM and PAHs, indicating the need to control the emissions of anthropogenically derived pollutants during the dry weather season. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81056
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; California Department of Public Health, Environmental Health Laboratory Branch, 850 Marina Bay Parkway, G365, Richmond, CA 949804, United States; University of Chinese Academy of Sciences, Beijing 100049, China
Recommended Citation:
Guo L,-C,, Bao L,et al. Significance of wet deposition to removal of atmospheric particulate matter and polycyclic aromatic hydrocarbons: A case study in Guangzhou, China[J]. Atmospheric Environment,2014-01-01,83