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Long-term monitoring of airborne nickel (Ni) pollution in association with some potential source processes in the urban environment

Title
Long-term monitoring of airborne nickel (Ni) pollution in association with some potential source processes in the urban environment
Author
김기현
Keywords
Airborne Ni; Urban environment; Korea; Asian dust; Long-term trends
Issue Date
2014-09
Publisher
Elsevier Ltd
Citation
Chemosphere, September 2014, 111, p.312-319
Abstract
?The mean concentrations of Ni in urban air ranged from 3.71 to 12.6ngm?3.?Ni levels were subject to gradual reductions over the 13 year period.?Airplanes and ship industries are not likely to affect long-term levels of airborne Ni.The environmental behavior and pollution status of nickel (Ni) were investigated in seven major cities in Korea over a 13-year time span (1998?2010). The mean concentrations of Ni measured during the whole study period fell within the range of 3.71 (Gwangju: GJ) to 12.6ngm?3 (Incheon: IC). Although Ni values showed a good comparability in a relatively large spatial scale, its values in most cities (6 out of 7) were subject to moderate reductions over the study period. To assess the effect of major sources on the long-term distribution of Ni, the relationship between their concentrations and the potent source processes like non-road transportation sources (e.g., ship and aircraft emissions) were examined from some cities with port and airport facilities. The potential impact of long-range transport of Asian dust particles in controlling Ni levels was also evaluated. The overall results suggest that the Ni levels were subject to gradual reductions over the study period irrespective of changes in such localized non-road source activities. The pollution of Ni at all the study sites was maintained well below the international threshold (Directive 2004/107/EC) value of 20ngm?3.
URI
https://www.sciencedirect.com/science/article/pii/S0045653514005323?via%3Dihubhttp://hdl.handle.net/20.500.11754/48797
ISSN
0045-6535
DOI
10.1016/j.chemosphere.2014.03.138
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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