정준식 권순박 김종범 김성연 이우석 배귀남 박덕신 2024-01-20T05:31:51Z 2024-01-20T05:31:51Z 2021-09-06 2015-12 2288-9167 https://pubs.kist.re.kr/handle/201004/124667 In this study, we investigated the concentrations of PM10 and CO2 in public transportation vehicles (express bus,train, KTX, and subway) reported by previous indoor air quality (IAQ) surveys carried out from 2005 to 2013in Korea. The number of valid data for PM10 was 566 and for CO2 was 579, and all data were classified accordingto whether it was collected during rush-hour or non rush-hour. PM10 and CO2 concentrations in subway cabinduring the rush-hour were 1.3 and 1.45 times higher, respectively, than those of non rush-hour (p<0.05) in termsof geometric mean value. PM10 and CO2 concentration of express bus and train during the rush-hour also were1.23 times higher than those of non rush-hour with relatively weak correlations (p=0.246). Among all PM10concentrations, 16.9% and 3.8% of PM10 concentrations exceeded the IAQ guidelines (200 μg/m3 for non-rushhour and 250 μg/m3 for rush-hour), respectively. In terms of CO2 concentrations, 10.5% and 3.0% of themexceeded the IAQ guidelines (2,500 ppm for non rush-hour and 3,000 ppm for rush-hour), respectively. As a result,concentrations of PM10 and CO2 were estimated to be dominantly influenced by the operation characteristics ofpublic transportation, such as degree of congestion and type of vehicle. In order to improve the IAQ of publictransportation vehicles, specific air purification and ventilation systems are needed, depending on the characteristicsof public transportation vehicles. Korean 한국냄새환경학회 혼잡영향에 따른 대중교통 차량 내 PM10과 CO2 농도 특성에 관한 연구 Study of PM10 and CO2 concentrations in public transportation vehicles considering the congestion effect Article 10.15250/joie.2015.14.4.323 2 실내환경 및 냄새 학회지, v.14, no.4, pp.323 - 330 실내환경 및 냄새 학회지 14 4 323 330 kci ART002071203 CO2 Congestion Indoor air quality PM10 Public transportation