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KMID : 1156220190450020186
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Journal of Environmental Health Sciences
2019 Volume.45 No. 2 p.186 ~ p.191
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Characteristics of In-cabin PM2.5 Concentration in Seoul Metro Line Number 2 in Autumn
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Shin Hye-Rin
Jung Hyun-Hee
Lee Ki-Young
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Abstract
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Objectives: Subway is one of the most common transportation modes in Seoul, Korea. The objectives of this study were to determine characteristics of in-cabin PM 2.5 concentration in Seoul Metro Line Number 2 and to identify factors of the PM 2.5 concentration.
Methods: In-cabin PM2.5 concentrations in Seoul Metro Line Number 2 were measured using real-time monitors and the factors affecting PM 2.5 concentration in cabin were observed. Linear regression analysis of in-cabin PM 2.5 concentration and indoor/outdoor (I/O) ratio were performed.
Results: In-cabin PM2.5 concentration was associated with the in-cabin PM2.5 concentration in previous station.
In-cabin PM2.5 concentration was correlated with ambient PM2.5 concentration and associated with undergroundstation with control of the in-cabin PM2.5 concentration in previous station. I/O ratio increased as the number of passengers increased and when passing through the underground station with control of I/O ratio in previous station.
Conclusion: In-cabin PM2.5 concentration was affected by ambient PM2.5 concentration. Therefore, managementof in-cabin PM2.5 concentrations should be based on outdoor air quality.
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KEYWORD
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Seoul metro, subway cabin, PM 2.5 , I/O ratio, indoor air
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