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Long-Term Variations of Airborne Cadmium (Cd) Concentrations in Major Urban Areas of Korea between 1991 and 2010

Title
Long-Term Variations of Airborne Cadmium (Cd) Concentrations in Major Urban Areas of Korea between 1991 and 2010
Author
김기현
Keywords
Cadmium (Cd); Long-term; Spatiotemporal; Industrial; Urban
Issue Date
2013-06
Publisher
TAIWAN ASSOC AEROSOL RES-TAAR
Citation
AEROSOL AND AIR QUALITY RESEARCH, JUN 2013, 13(3), p.1078-p.1089
Abstract
The long-term (1991-2010) monitoring data for cadmium (Cd) collected from seven major cities in Korea were evaluated to assess spatial-temporal trends in urban areas and help improve air quality control. The results show that the level of Cd pollution in the different cities, as distinguished by industrial activity, was the highest in Ulsan (9.21 +/- 6.29 ng/m(3)) and Incheon (6.25 +/- 6.05 ng/m(3)). During the study period, Cd concentrations showed significant reductions in all monitoring cities, especially in the more industrialized ones (e.g., a nearly six-fold reduction in Ulsan over 13 years), while in other areas this reduction was more moderate (about 1.7-fold). In addition, Cd concentrations generally peaked in the winter, with the exception of the more industrialized areas. Although Cd levels in Ulsan and Incheon exceeded the general guidelines of 5 ng/m(3) (e.g., those of the US EPA) until recently (e.g., 2004), its values in most urban areas in Korea have been continuously decreasing over the 20-year period examined in this work. Therefore, greater efforts are necessary to more effectively reduce Cd released from the prominent source activities in the urban environments.
URI
http://www.aaqr.org/article/detail/AAQR-12-10-OA-0268http://hdl.handle.net/20.500.11754/46388
ISSN
1680-8584
DOI
10.4209/aaqr.2012.10.0268
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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