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http://dx.doi.org/10.5572/KOSAE.2014.30.3.233

Evaluation on Indoor Air Quality by Statistical Analysis of Indoor Air Pollutants Concentration in a Seoul Metropolitan Underground Railway Station  

Yim, Bongbeen (R&D Center, NINECO Inc.)
Lee, Kyusung (R&D Center, NINECO Inc.)
Kim, Jooin (R&D Center, NINECO Inc.)
Hong, Hyunsu (R&D Center, NINECO Inc.)
Kim, Jangwon (Indoor Air Quality & Noise Monitoring Network Team, Korea Environment Corporation)
Jo, Kyung-Ho (Indoor Air Quality & Noise Monitoring Network Team, Korea Environment Corporation)
Jung, Eulgyu (Indoor Air Quality & Noise Monitoring Network Team, Korea Environment Corporation)
Kim, Inkyu (Indoor Air Quality & Noise Monitoring Network Team, Korea Environment Corporation)
An, Yeonsun (HQ of Climate & Air Quality Management, Korea Environment Corporation)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.30, no.3, 2014 , pp. 233-244 More about this Journal
Abstract
The objective of this study was to explore the characteristics of concentration of indoor air pollutants, such as $PM_{10}$, $CO_2$, and $NO_2$, measured by tele-monitoring system in a Seoul Metropolitan underground railway station from January 1, 2008 to December 31, 2012. The annual average concentration of indoor air pollutants actually varied over a wide range and was found to exhibit marked variation with time and measurement sites (tunnel inlet, platform, and concourse). After installing platform screen doors, the average $PM_{10}$ concentration on platform and concourse was decreased by 43.8% and 31.2%, respectively during the study periods. The relationship between the concentration of $PM_{10}$ and meteorological parameters (relative humidity and rainfall) or the Asian dust events was regarded as statistically significant. The correlations between the number of boarding/alighting passengers and $PM_{10}$, $CO_2$, and $NO_2$ were calculated. A p-value of less than 0.01 was regarded as significant except $NO_2$. The I/O ratio of $PM_{10}$ concentration was elevated after a congested time (about 08:00 am). The average I/O ratios of $NO_2$ were observed in concourse and platform on 03:00 am with $1.76{\pm}0.91$ and $1.50{\pm}0.51$, respectively. The average daily variation of standard excess rate of $PM_{10}$ and $NO_2$ concentration in concourse and platform was investigated. The highest standard excess rate was observed on 21:00 (09:00 pm).
Keywords
Underground railway station; Tele-monitoring system; Indoor air quality; $PM_{10}$; $CO_2$;
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Times Cited By KSCI : 4  (Citation Analysis)
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