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A Study of PM levels in Subway Passenger Cabins in Seoul Metropolitan area  

Roh, Young-Man (Institute of Environmental and Industrial Medicine, Hanyang University)
Park, Wha Me (Institute of Environmental and Industrial Medicine, Hanyang University)
Lee, Choel Min (Institute of Environmental and Industrial Medicine, Hanyang University)
Kim, Yoon Shin (Institute of Environmental and Industrial Medicine, Hanyang University)
Park, Dong Sun (EpludT Co., Ltd)
Kim, Suck Won (Korean Industrial Health Association)
Publication Information
Journal of Korean Society of Occupational and Environmental Hygiene / v.17, no.1, 2007 , pp. 13-20 More about this Journal
Abstract
This study was performed to investigate the concentrations of PM($PM_{10}$, $PM_{2.5}$, $PM_{1}$) and it's affecting factors in the subway from line 1 to line 8 in Seoul metropolitan area, from Sep. 1 to 30, 2005. PM concentrations were measured at the entrances and centers in subway passenger cabins by a light scattering equipment. And the affecting factors to PM were estimated based on the number of passenger, door open and close and running area etc. The geometric means of $PM_{10}$, $PM_{2.5}$ and $PM_{1}$ concentration in Seoul subway passenger cabins were $214{\mu}g/m^3$, $86.6{\mu}g/m^3$ and $27.0{\mu}g/m^3$, respectively. These mean concentrations in subway carriage were higher when it ran on an underground track than on a ground track. And running time(7AM-9AM, 11AM-13PM, 6PM-8PM) significantly influenced to the concentrations of $PM_{10}$, $PM_{2.5}$ and $PM_{1}$. Daily profile of $PM_{10}$ and $PM_{2.5}$, $PM_{1}$ expressed as an 10 minutes average, showed similar variation pattern over day period. In correlation analysis, significant relations among $PM_{10}$, $PM_{2.5}$ and $PM_{1}$ were detected(p〈0.01). In particular, correlation coefficient between $PM_{10}$and $PM_{1}$ was highly significant(r=0.94). Further study is needed to identity the sources of PM in subway cabins and to compare pollutants concentration among subway lines.
Keywords
$PM_{10}$; $PM_{2.5}$; $PM_{1}$; subway; passenger cabin;
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Times Cited By KSCI : 1  (Citation Analysis)
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