Role of Chinese wind-blown dust in enhancing environmental pollution in Metropolitan Seoul
- Authors
- Kim, Wonnyon; Doh, Seong-Jae; Yu, Yongjae; Lee, Meehye
- Issue Date
- 5월-2008
- Publisher
- ELSEVIER SCI LTD
- Keywords
- anthropogenic; Asian dust; carbon-bearing iron-oxide; magnetic spherule; pollution
- Citation
- ENVIRONMENTAL POLLUTION, v.153, no.2, pp.333 - 341
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENVIRONMENTAL POLLUTION
- Volume
- 153
- Number
- 2
- Start Page
- 333
- End Page
- 341
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/123649
- DOI
- 10.1016/j.envpol.2007.08.014
- ISSN
- 0269-7491
- Abstract
- A suite of rock magnetic experiments and intensive microscopic observations were carried out on Asian dust deposits in Seoul, Korea, collected on 19 and 23 March 2002, 9 April 2002 and 12 April 2003. Desert-sand and loess from the dust source regions in China were also analyzed as a comparison. Asian dust showed a higher magnetic concentration than the source region samples, indicating a significant influx of magnetic particles into Asian dust had occurred during its transportation. Electron microscopy identified carbon-bearing iron-oxides as the added material. These iron-oxides were likely to have been produced by anthropogenic pollution (fossil fuel combustion) while the wind-blown dusts passing across the industrial areas of eastern China and western Korea. Such wind-paths were confirmed by a simulation of the air-mass trajectories. The magnetic technique appears to be useful for determining the anthropogenic pollution of Asian dust. (C) 2007 Elsevier Ltd. All rights reserved.
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