DOI: 10.1016/j.atmosenv.2014.05.003
Scopus记录号: 2-s2.0-84899921281
论文题名: Sources of polycyclic aromatic hydrocarbons in PM2.5 over the East China Sea, a downwind domain of East Asian continental outflow
作者: Wang F ; , Lin T ; , Li Y ; , Ji T ; , Ma C ; , Guo Z
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 92 起始页码: 484
结束页码: 492
语种: 英语
英文关键词: East asian continental outflow
; PAHs
; PMF
; Sources
; The east china sea
Scopus关键词: Atmospheric movements
; Coal combustion
; Elementary particle sources
; Air-surface exchanges
; Atmospheric transport
; Average concentration
; Continental outflow
; East China Sea
; PAHs
; PMF
; Positive matrix factorization models
; Polycyclic aromatic hydrocarbons
; coal
; petroleum derivative
; polycyclic aromatic hydrocarbon
; air
; article
; atmospheric transport
; biomass
; burn
; carbon source
; China
; combustion
; controlled study
; East China Sea
; exhaust gas
; falling
; molecular weight
; oceanic regions
; positive matrix factorization
; priority journal
; seasonal variation
; spring
; summer
; surface property
; winter
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: A receptor site in the East China Sea (ECS), ~66km off the shore of Shanghai, was used to investigate the seasonally atmospheric transport of land-based PAHs. Positive matrix factorization (PMF) modeling and back trajectories were performed to apportion the sources of the 16 USEPA priority PAHs (16 PAHs). In the process, three episodes were observed in all seasons except summer. These episodes provided additional insight to the transport mechanisms of these air pollutants in this most developed region of China. The average concentrations (in ng/m3) of PAHs in PM2.5 in fall, winter, spring and summer were 5.26±5.36, 10.41±8.58, 3.93±2.31 and 0.97±0.25, respectively, and with an annual average of 5.24±5.81. Low molecular weight (LMW) PAHs (i.e., 2~3-ring) was a dominant contributor for the 16 PAHs in PM2.5 over the ECS (36.2%), especially in summer (55.6%). The source apportionment by PMF analysis indicated that, based on yearly average, vehicular emission (27.0%) and coal combustion (24.5%) were the two major sources of PAHs, followed by biomass burning (16.5%), petroleum residue (16.3%) and air-surface exchange (15.7%). The highest source contributor for PAHs in fall and winter was coal combustion (30.5%) and vehicular emission (34.5%), respectively; while in spring and summer, the air-surface exchange contributed the most (27.1% and 59.5%, respectively). The specific composition patterns of 16 PAHs and PMF modeling results manifested that the air-sea exchange could be a potential source for the LMW PAHs in PM2.5 over the ECS, especially in warm season. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81177
Appears in Collections: 气候变化事实与影响
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作者单位: Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Center for Atmospheric Chemistry Study, Fudan University, Department of Environmental Science and Engineering, 220 Handan Road, Shanghai 200433, China; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
Recommended Citation:
Wang F,, Lin T,, Li Y,et al. Sources of polycyclic aromatic hydrocarbons in PM2.5 over the East China Sea, a downwind domain of East Asian continental outflow[J]. Atmospheric Environment,2014-01-01,92