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Characteristic Assessment of Heavy Metals in Dusts Collected by the Air Filtration System at Subway Stations in Daegu, Korea  

Do, Hwa-Seok (Public Health and Environment Institute of Daegu Metropolitan City)
Song, Hee-Bong (Public Health and Environment Institute of Daegu Metropolitan City)
Shin, Dong-Chan (Public Health and Environment Institute of Daegu Metropolitan City)
Kwak, Jin-Hee (Public Health and Environment Institute of Daegu Metropolitan City)
Lee, Myoung-Sook (Public Health and Environment Institute of Daegu Metropolitan City)
Yoon, Ho-Suk (Public Health and Environment Institute of Daegu Metropolitan City)
Kang, Hye-Jung (Public Health and Environment Institute of Daegu Metropolitan City)
Phee, Young-Gyu (Department of Health Science, Daeguhaany University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.31, no.1, 2009 , pp. 42-50 More about this Journal
Abstract
Samples of subway dust were collected by the air filter system of 30 subway stations on Daegu subway line 1 in January 2008. Samples were sieved below 100 ${\mu}m$, and 14 elements were analyzed using ICP after acid extraction. Results obtained from the source assessment of trace elements using enrichment factor showed that Ca, Fe, K, Mg, Mn, Na, V were influenced by natural sources such as weathered rock and resuspended soil, while Cd, Cr, Cu, Ni, Pb and Zn were influenced by anthropogenic sources such as fuel combustion and waste incineration. Concentrations were remarkably higher in components from natural sources than in components from anthropogenic sources. Anthropogenic sources were significantly affected by indoor dusts than outdoor dusts. Results of pollution indices of heavy metals indicated that indoor dusts were more contaminated with heavy metal ions than outdoor dusts. The correlation analysis among trace elements indicated that components were much correlated in the order of natural sources-anthropogenic sources, anthropogenic sources-anthropogenic sources, natural sources-natural sources in both indoor and outdoor dusts. Trace element components of outdoor dusts were largely correlated than those of indoor dusts. In addition, indoor dusts were significantly affected by outdoor dusts rather than depth from the surface or the average daily number of subway passengers.
Keywords
Subway Dust; Trace Elements; Enrichment Factor; Pollution Indices;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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