DOI: 10.1016/j.atmosenv.2015.03.059
Scopus记录号: 2-s2.0-84926293569
论文题名: Characterization of carbonaceous aerosols over the East China Sea: The impact of the East Asian continental outflow
作者: Wang F ; , Guo Z ; , Lin T ; , Hu L ; , Chen Y ; , Zhu Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 110 起始页码: 163
结束页码: 173
语种: 英语
英文关键词: Carbonaceous aerosols
; Concentration
; East asian continental outflow
; East china Sea
; Size distribution
; Sources
Scopus关键词: Aerosols
; Air quality
; Carbon
; Concentration (process)
; Elementary particle sources
; Organic carbon
; Paraffins
; Particles (particulate matter)
; Pollution
; Size distribution
; Wind
; Aerodynamic diameters
; Carbonaceous aerosol
; Continental outflow
; East China Sea
; Microbial contribution
; Primary organic carbons
; Secondary organic carbons (SOC)
; Total suspended particles
; Air pollution
; alkane
; carbon
; elemental carbon
; organic carbon
; petroleum derivative
; unclassified drug
; aerosol property
; air quality
; biomass burning
; climate effect
; island
; outflow
; pristine environment
; seasonal variation
; size distribution
; aerosol
; air analysis
; air pollution
; air quality
; airborne particle
; altitude
; Article
; atmosphere
; biomass
; carbonaceous aerosol
; China
; environmental temperature
; exhaust gas
; falling
; gas chromatography
; meteorology
; particle size
; priority journal
; sea
; sea level
; seasonal variation
; spring
; summer
; total organic carbon
; winter
; East China Sea
; Pacific Ocean
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: Seventy-five paired PM2.5 (aerodynamic diameter less than 2.5μm) and TSP (total suspended particle) samples collected from a pristine island in the East China Sea (ECS) between October 2011 and August 2012 were analyzed for organic carbon (OC), elemental carbon (EC), and n-alkanes. The island lies in the pathway of continental outflow from Mainland China to the northwest Pacific Ocean driven by the East Asian Monsoon. The concentrations of OC, EC (in μg/m3), and n-alkanes (in ng/m3) were highest in winter (means: 4.7, 1.3, 140.1, respectively) and lowest in summer (means: 1.1, 0.3, 17.0, respectively). PM2.5 contained approximately 88% of the OC, 80% of the EC, and 61% of the n-alkanes in TSP. Petroleum residue was the dominant contributor to the n-alkanes. C12 -C22 n-alkanes with strong even-to-odd predominance observed in winter were attributed to the microbial contribution from sea spray aerosol (SSA) driven by the higher wind speed. There was a higher secondary organic carbon (SOC)/OC ratio in warm seasons (summer and fall) than that in cold seasons (spring and winter). The dominance of primary organic carbon (POC) and EC in cold seasons was possibly mainly due to the influence of the East Asian continental outflow. Three episodes of high concentrations of carbonaceous aerosols were observed, and we focused on the impact of these pollutants from East Asia on the air quality over the ECS. Carbonaceous pollutants were more concentrated in PM2.5 during the fall episode triggered by biomass burning in East China. The winter haze associated with intensive indoor heating in North China brought substantial carbonaceous pollutants, with a minor influence on their size distribution. The dust episode in spring was related to coarse particles (i.e., TSP-PM2.5), yielding a distinctly different size distribution. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81793
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, Department of Environmental Science and Engineering, Fudan University, Shanghai, China; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China; Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao, China; Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California, Los AngelesCA, United States
Recommended Citation:
Wang F,, Guo Z,, Lin T,et al. Characterization of carbonaceous aerosols over the East China Sea: The impact of the East Asian continental outflow[J]. Atmospheric Environment,2015-01-01,110