DOI: 10.1016/j.atmosenv.2014.06.043
Scopus记录号: 2-s2.0-84903137114
论文题名: Concentrations of trace elements in wet deposition over the central Himalayas, Nepal
作者: Tripathee L ; , Kang S ; , Huang J ; , Sharma C ; M ; , Sillanpää M ; , Guo J ; , Paudyal R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 95 起始页码: 231
结束页码: 238
语种: 英语
英文关键词: Central Himalayas
; Nepal
; Seasonal variation
; Trace elements
; Wet deposition
Scopus关键词: Atmospheric thermodynamics
; Deposition
; Lead
; Manganese
; Nickel
; Pollution
; Principal component analysis
; Trace elements
; Zinc
; Atmospheric pollutants
; Atmospheric wet deposition
; Elemental concentrations
; Himalayas
; Nepal
; Precipitation chemistry
; Seasonal variation
; Wet deposition
; Urban growth
; aluminum
; cadmium
; chromium
; cobalt
; copper
; ferric ion
; lead
; manganese
; nickel
; trace element
; zinc ion
; concentration (composition)
; ecosystem health
; pollutant transport
; pollution monitoring
; precipitation (climatology)
; trace element
; urban area
; wet deposition
; air pollution
; altitude
; article
; atmospheric transport
; concentration (parameters)
; human
; Nepal
; precipitation
; priority journal
; rural area
; seasonal variation
; suburban area
; urban area
; wet deposition
; Himalayas
; Nepal
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 pollutants transported from south Asia may impose a serious impact on human and ecosystem health in the central Himalayan region, Nepal. In order to investigate trace elements in atmospheric wet deposition in the southern slope of the Himalayas, precipitation samples were collected for over a year from four stations: Kathmandu (1314m.a.s.l), Dhunche (2065m.a.s.l), Dimsa (3078m.a.s.l) and Gosainkunda (4417m.a.s.l) characterized as urban, semi-urban, rural or remote site, respectively. A total of 221 samples were collected and concentrations of 10 trace elements (Al, Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb) were examined. The highest concentrations of elements were found at urban site (Kathmandu) and lowest at remote site (Gosainkunda). The seasonal differences of elemental concentrations in Kathmandu was not clear between monsoon and non-monsoon seasons as local sources predominated over regional sources. On the contrary, the other three sites showed a distinct seasonal variation with higher loadings of trace elements during non-monsoon and lower during monsoon. EFs calculations at all sites showed that most of elements (Cr, Co, Ni, Cu, Zn, Cd and Pb) were from anthropogenic sources and some (Al, Fe and Mn) were originated from crustal sources. Furthermore, principal component analysis (PCA) also indicated that the precipitation chemistry was mostly influenced by crustal and anthropogenic sources in Nepalese Himalayas. The result from the present study is an indication that long-range transport of pollutants has a significant impact on the high altitude remote areas in the central Himalayan regions. © 2014 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80847
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China; State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China; Human and Natural Resources Studies Centre, Kathmandu University, PO Box 6250, Kathmandu, Nepal; Laboratory of Green Chemistry, Lappeenranta University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland
Recommended Citation:
Tripathee L,, Kang S,, Huang J,et al. Concentrations of trace elements in wet deposition over the central Himalayas, Nepal[J]. Atmospheric Environment,2014-01-01,95