DOI: 10.1016/j.atmosenv.2015.08.061
Scopus记录号: 2-s2.0-84941556774
论文题名: Characteristics of size-fractionated atmospheric metals and water-soluble metals in two typical episodes in Beijing
作者: Wang Q ; , Ma Y ; , Tan J ; , Zheng N ; , Duan J ; , Sun Y ; , He K ; , Zhang Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 119 起始页码: 294
结束页码: 303
语种: 英语
英文关键词: Aerosol
; Beijing
; Haze
; Size-fractionated
; Water-soluble metals
Scopus关键词: Aerosols
; Antimony
; Cadmium
; Industrial emissions
; Lead
; Manganese
; Manganese removal (water treatment)
; Metals
; Particle size
; Solubility
; Storms
; Tin
; Water pollution
; Zinc
; Beijing
; Haze
; Human health effects
; Industrial sources
; Size-fractionated
; Water soluble components
; Water soluble inorganic ions
; Watersoluble
; Copper
; ion
; metal
; rain
; water
; air mass
; Aitken nucleus
; atmospheric pollution
; concentration (composition)
; dust storm
; haze
; heavy metal
; nitrous oxide
; particle size
; pollutant source
; size distribution
; solubility
; sulfur compound
; air pollution
; Article
; atmospheric deposition
; China
; concentration (parameters)
; health hazard
; particle size
; priority journal
; solubility
; Beijing [China]
; China
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: The abundance and behaviour of metals and water-soluble metals (V, Cr, Mn, Fe, Cu, Zn, As, Sr, Ag, Cd, Sn, Sb, Ba and Pb) in size-fractionated aerosols were investigated during two typical episodes in Beijing. Water-soluble inorganic ions (Na+, K+, Mg2+, Ca2+, NH4+, F-, Cl-, SO42- and NO3-) were also measured. Atmospheric metals and water-soluble metals were both found at high levels; for PM2.5, average As, Cr, Cd, Cu, Mn and Pb concentrations were 14.8, 203.3, 2.5, 18.5, 42.6 and 135.3 ng/m3, respectively, and their water-soluble components were 11.1, 1.7, 2.4, 14.5, 19.8 and 97.8 ng/m3, respectively. Daily concentrations of atmospheric metals and water-soluble metals were generally in accordance with particle mass. The highest concentrations of metals and water-soluble metals were generally located in coarse mode and droplet mode, respectively. The lowest mass of metals and water-soluble metals was mostly in Aitken mode. The water solubility of all metals was low in Aitken and coarse modes, indicating that freshly emitted metals have low solubility. Metal water solubility generally increased with the decrease in particle size in the range of 0.26-10 μm. The water solubility of metals for PM10 was: 50% ≤ Cd, As, Sb, Pb; 26% < V, Mn, Cu, Zn and Sr ≤ 50%; others ≤20%. Most metals, water-soluble metals and their water solubility increased when polluted air mass came from the near west, near north-west, south-west and south-east of the mainland, and decreased when clean air mass came from the far north-west and far due south. The influence of dust-storms and clean days on water-soluble metals and size distribution was significant; however, the influence of rainfall was negligible. Aerosols with high concentrations of SO42-, K+ and NH4+ might indicate increased potential for human health effects because of their high correlation with water-soluble metals. Industrial emissions contribute substantially to water-soluble metal pollution as water-soluble metals show higher correlation with Cd, Sn, Sb and Pb that are mainly derived from industrial sources. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81528
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, School of Environment, Tsinghua University, Beijing, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
Recommended Citation:
Wang Q,, Ma Y,, Tan J,et al. Characteristics of size-fractionated atmospheric metals and water-soluble metals in two typical episodes in Beijing[J]. Atmospheric Environment,2015-01-01,119