서울시 지하역사 실내오염물질 농도자료의 통계분석을 통한 실내공기질 특성 평가

• Published in: 한국대기환경학회지 Vol. 30; no. 3; pp. 233 - 244
• Main Authors: 임봉빈(Bongbeen Yim), 이규성(Kyusung Lee), 김주인(Jooin Kim), 홍현수(Hyunsu Hong), 김장원(Jangwon Kim), 조경호(Kyung-Ho Jo), 정을규(Eulgyu Jung), 김인규(Inkyu Kim), 안연순(Yeonsun An)
• Format: Journal Article
• Language: Korean
• Published: 한국대기환경학회 2014
• Subjects: 대기과학; Underground railway station; Tele-monitoring system; 10< PM< CO; SUB> Indoor air quality; CO_2; PM_{10}
• ISSN: 1598-7132; 2383-5346
• DOI: 10.5572/KOSAE.2014.30.3.233

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).