DOI: 10.1016/j.atmosenv.2014.02.042
Scopus记录号: 2-s2.0-84896892203
论文题名: Polycyclic aromatic hydrocarbons (PAHs) associated with fine particulate matters in Nanjing, China: Distributions, sources and meteorological influences
作者: He J ; , Fan S ; , Meng Q ; , Sun Y ; , Zhang J ; , Zu F
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 89 起始页码: 207
结束页码: 215
语种: 英语
英文关键词: Meteorological influence
; PM2.1
; Polycyclic aromatic hydrocarbons
; Regional transport
; Source
Scopus关键词: Collection efficiency
; Correlation coefficient
; Fine particulate matter
; Meteorological influence
; Meteorological parameters
; Polycyclic aromatic hydrocarbons (PAHS)
; Regional transport
; Source
; Coal combustion
; Urban growth
; Polycyclic aromatic hydrocarbons
; coal
; coke
; diesel fuel
; gasoline
; polycyclic aromatic hydrocarbon
; pyrene derivative
; volatile organic compound
; air mass
; atmospheric pollution
; biomass burning
; coal
; combustion
; concentration (composition)
; exhaust emission
; PAH
; particulate matter
; pollutant transport
; pollution monitoring
; seasonal variation
; seasonality
; spatial distribution
; urban atmosphere
; air
; air pollutant
; air pollution
; article
; autumn
; biomass
; burn
; China
; combustion
; decomposition
; electric power plant
; exhaust gas
; health hazard
; mass
; meteorological phenomena
; meteorology
; particulate matter
; precipitation
; priority journal
; seasonal variation
; spring
; suburban area
; summer
; temperature
; traffic and transport
; urban area
; velocity
; visibility
; wind
; winter
; China
; Jiangsu
; Nanjing [Jiangsu]
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 study of 16 polycyclic aromatic hydrocarbons (PAHs) associated with fine particulate matters at suburban and urban sites in Nanjing was carried out each season from November 2009 to July 2010. At the suburban and urban sites, the concentrations of total PAHs (T-PAHs) were in the ranges of 30.76-102.26ng/m3 and 25.92-90.80ng/m3, respectively. This paper elucidates the distributions, sources of PAHs and meteorological influences: 1) PAHs concentrations at the two sites were close to each other and similarity between PAHs profiles of the two sites indicated they had common sources, which were attributed to the combined effect of regional transport and local emission. 2) At both sites, the profiles displayed obvious seasonal variations, as a result of the seasonality of sources and meteorological influences. The T-PAHs concentrations were in the order of winter>spring>autumn>summer. 3) Source apportionment showed vehicle exhaust (72.93-87.24%) was the greatest contributor in all seasons. The coal combustion and coke production (coal/coke) (10.02-18.63%) were identified in all but summer seasons, because of the low collection efficiency of PAHs markers of coal/coke under high temperature. For autumn, biomass burning (10.58%) was an extra contributor. 4) Regarding meteorological parameters, a negative effect of temperature over PAHs was confirmed, with a correlation coefficient of-0.51 (p<0.05). Precipitation could remove PAHs to some extent. Both positive and negative correlations between PAHs concentration and wind speed in each season were analyzed in combination with air mass back-trajectories so as to evaluate the effects of regional air transport. The results showed that polluted air from ENE-S and NNW-NE brought in outside sources to the study area and played a major role in the accumulation of fine-particulate PAHs in spring and winter respectively, while clean air from southwest contributed to the dilution in summer. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80661
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing 210044, China; Department of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, China; Jiangsu Institute of Meteorological Sciences, Nanjing 210008, China
Recommended Citation:
He J,, Fan S,, Meng Q,et al. Polycyclic aromatic hydrocarbons (PAHs) associated with fine particulate matters in Nanjing, China: Distributions, sources and meteorological influences[J]. Atmospheric Environment,2014-01-01,89