DOI: 10.1016/j.atmosenv.2014.06.003
Scopus记录号: 2-s2.0-84902185190
论文题名: Composition and hygroscopicity of aerosol particles at Mt. Lu in South China: Implications for acid precipitation
作者: Li W ; , Chi J ; , Shi Z ; , Wang X ; , Chen B ; , Wang Y ; , Li T ; , Chen J ; , Zhang D ; , Wang Z ; , Shi C ; , Liu L ; , Wang W
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94 起始页码: 626
结束页码: 636
语种: 英语
英文关键词: Acid precipitation
; Aerosol formation
; Hygroscopicity
; Individual particle
Scopus关键词: Aerosols
; Air pollution
; Atmospheric movements
; Lead
; Liquids
; Organic coatings
; Precipitation (meteorology)
; Sulfur dioxide
; Water pollution
; Acid precipitation
; Aerosol formation
; Hygroscopicity
; Individual particle analysis
; Individual particles
; Liquid-phase reaction
; Physicochemical property
; Yangtze river delta
; Precipitation (chemical)
; ammonium nitrate
; ammonium sulfate
; hydrogen
; ion
; iron
; lead
; manganese
; mineral
; nitrogen derivative
; organic matter
; oxygen derivative
; sulfate
; water
; zinc
; acid precipitation
; acidity
; aerosol
; human activity
; hygroscopicity
; physicochemical property
; sulfuric acid
; acid precipitation
; acidity
; aerosol
; air pollutant
; air pollution
; ambient air
; article
; biomass
; chemical composition
; China
; cloud
; electric power plant
; exhaust gas
; humidity
; industry
; oxidation
; physical chemistry
; priority journal
; soot
; temperature
; troposphere
; urban area
; water vapor
; wettability
; wind
; China
; Jiangxi
; Lushan Mountains
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: Physicochemical properties of aerosol particles were studied at Mt. Lu, an elevated site (115°59'E, 29°35'N, 1165m) within the acid precipitation area. Northeast winds transport copious amounts of air pollutants and water vapor from the Yangtze River Delta into this acid precipitation area. NH4 + and SO4 2- are the dominant ions in PM2.5 and determine aerosol acidity. Individual particle analysis shows abundant S-rich and metals (i.e. Fe-, Zn-, Mn-, and Pb-rich) particles. Unlike aerosol particles in North China and urban areas, there are little soot and mineral particles at Mt. Lu. Lack of mineral particles contributed to the higher acidity in precipitation in the research area. Nano-sized spherical metal particles were observed to be embedded in 37% of S-rich particles. These metal particles were likely originated from heavy industries and fired-power plants. Hygroscopic experiments show that most particles start to deliquesce at 73-76% but organic coating lowers the particle deliquescence relative humidity (DRH) to 63-73%. The DRHs of these aerosol particles are clearly smaller than that of pure ammonium sulfate particles which is 80%. Since RH in ambient air was relatively high, ranging from 65% to 85% during our study period, most particles at our sampling site were in liquid phase. Our results suggest that liquid phase reactions in aerosol particles may contribute to SO2 to sulfuric acid conversion in the acid precipitation area. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80962
Appears in Collections: 气候变化事实与影响
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作者单位: Environment Research Institute, Shandong University, Jinan, Shandong 250100, China; School of Geography, Earth and Environmental Sciences, University of Birmingham, United Kingdom; School of Environment Science and Engineering, Shandong University, Jinan, Shandong 250100, China; Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, Kumamoto 862-8502, Japan; State Key of Laboratory of Atmospheric Boundary Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Anhui Institute of Meteorological Sciences, Anhui Institute of Meteorological Sciences, Hefei, 230031, China; Nanjing University of Information Science and Technology, Jiangsu, 210044, China
Recommended Citation:
Li W,, Chi J,, Shi Z,et al. Composition and hygroscopicity of aerosol particles at Mt. Lu in South China: Implications for acid precipitation[J]. Atmospheric Environment,2014-01-01,94