DOI: 10.1016/j.atmosenv.2013.10.004
Scopus记录号: 2-s2.0-84888384416
论文题名: Chemical characteristics of atmospheric fallout in the south of Xi'an during the dust episodes of 2001-2012 (NW China)
作者: Li X ; , Feng L ; , Huang C ; , Yan X ; , Zhang X
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 83 起始页码: 109
结束页码: 118
语种: 英语
英文关键词: Atmospheric fallouts (AFs)
; Chemical composition
; Dust episodes
; Heavy metals
; Multivariate analysis
; Water-soluble ions
; Xi'an
Scopus关键词: Atmospheric chemistry
; Barium
; Bromine
; Cerium
; Cesium
; Coal combustion
; Dust
; Electron emission
; Fallout
; Fluorescence spectroscopy
; Heavy metals
; Ions
; Lanthanum
; Lead
; Magnetic susceptibility
; Principal component analysis
; Size distribution
; Storms
; Strontium
; Water resources
; Zinc
; Atmospheric fallout
; Chemical compositions
; Multi variate analysis
; Water-soluble ions
; Xi'an
; Magnesium
; aluminum
; barium
; bromine
; calcium
; cerium
; cesium
; chromium
; cobalt
; copper
; gallium
; iron
; lanthanum
; lead
; magnesium
; manganese
; nickel
; niobium
; potassium
; rubidium
; sodium
; strontium
; trace element
; vanadium
; yttrium
; zinc
; aluminum
; chemical composition
; chromium
; cluster analysis
; combustion
; copper
; dust
; dust storm
; fallout
; FTIR spectroscopy
; magnetic susceptibility
; particle size
; principal component analysis
; public health
; size distribution
; toxic material
; water resource
; X-ray fluorescence
; air pollutant
; air temperature
; article
; atmospheric fallout
; chemical composition
; China
; controlled study
; drought
; dust
; dust episode
; fallout
; Fourier transform mass spectrometry
; magnetism
; particle size
; pH
; physical chemistry
; population density
; priority journal
; X ray fluorescence
; China
; Shaanxi
; Xian
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: Atmospheric fallouts (AFs) were collected in the south of Xi'an, NW China, during the dust episodes of 2001-2012. The chemical characteristics of total 68 AF samples including their chemical compositions, size distribution and magnetic susceptibility were studied. The contamination degree and the source of heavy metals in AF were also explored with enrichment factor method and multivariate statistical analysis. The results showed that the particle mass size distribution of AFs dominated by coarse particles (PM10-50) in dust days. The concentrations of 26 elements associated with AFs determined by wavelength dispersive X-ray fluorescence spectrometry (WDXRF) in studied sites varied from 92.90 to 188.10mgkg-1 for Cr, 31.40 and 63.00mgkg-1 for Cu, 16.60 to 167.30 for Pb and 106.60 to 196.80 for Zn. Their average concentrations found in this study were 139.22±29.41mgkg-1, 46.93±10.56mgkg-1, 78.42±46.52mgkg-1 and 150.61±32.84mgkg-1, respectively, which exceeded their corresponding recommended background values more than two times. While, other elements, such as Br varied from 1.10 to 5.90 with 3.34±1.60mgkg-1 mean, Cs from 2.90 to 10.90 with mean of 7.23±2.47mgkg-1, Ga between 6.90 and 20.80 with 15.23±3.59mgkg-1, Rb in the range of 62.10-124.20 with the average of 80.69±16.89mgkg-1, Y from 9.90 to 35.00 with 20.43±6.27mgkg-1 average, La from 29.60 to 54.20 with mean of 37.28±8.28mgkg-1 and V with average of 81.97±8.93mgkg-1 in the 57.7-92.10mgkg-1. Multivariate statistical analysis (principal component analysis and clustering analysis) was suggested that the principal element elements, Al, Fe, Si, K, Ca, Na, Mg, coupled with the trace elements Co, V, Ce, Mn, Ni, Ga, Y, Rb, La, Br, Cs were predominated by crustal material sources, whereas, Cr, Cu, Ba, Sr, As, Pb and Zn were highly influenced by anthropogenic activities. Simultaneously, the water-soluble ions (WS-ions) of NH4 +, SO4 2-, SO3 2-, NO3 -, SiO4 4-, HSO4 - contained in APs identified by FT-IR spectroscopy were possible originated from coal combustion. The results were also confirmed and consistent with the observations of magnetic susceptibility (MS), enrichment factor (EFs) and contamination evaluation analysis. With such rates of atmospheric fallouts that contain elevated levels of toxic elements during the dust storm condition, actions should be taken to continually examine and understand of the potential impacts of AFs on surface ecosystem, water resource, and human health in the dust storm condition. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81199
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Environmental Science, College of Tourism and Environment, Shaanxi Normal University, Xi'an, Shaanxi 710062, China; Department of Law and Foreign Language, Shaanxi Police Professional College, Xi'an, Shaanxi 710043, China; College of Chemistry and Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
Recommended Citation:
Li X,, Feng L,, Huang C,et al. Chemical characteristics of atmospheric fallout in the south of Xi'an during the dust episodes of 2001-2012 (NW China)[J]. Atmospheric Environment,2014-01-01,83