A Survey of Particulate Matters and CO2 Levels in Seoul Subway Carriages

Title & Authors
A Survey of Particulate Matters and CO2 Levels in Seoul Subway Carriages
Lee, Choel-Min; Park, Wha-Me; Roh, Young-Man; Kim, Yoon-Shin; Park, Dong-Sun;

Abstract
The objective of this study is to provide the research data on the actual concentrations of $\small{PM_{10},\;PM_{2.5},\;PM_1\;and\;CO_2}$ in Seoul subway carriages. Mean concentrations of $\small{PM_{10},\;PM_{2.5}\;and\;PM_1,\;and\;CO_2}$ in subway carriages were investigated at levels of $\small{215.1{\pm}101.4{\mu}g/m^3,\;86.9{\pm}38.6{\mu}g/m^3,\;27.0{\pm}11.4{\mu}g/m^3,\;and\;1,588{\pm}714ppm}$, respectively. The mean concentrations in subway carriages were higher when the train ran on an underground track rather than on an above ground track. The measured concentration of particulate matter varied with the time of day and was highest in the morning, followed by noon and evening while the $\small{CO_2}$ concentration was highest in the morning, followed by evening and noon. In relation to correlation among the pollutants: the correlation between $\small{PM_{10}\;and\;PM_{2.5}}$ was 0.92, and that between $\small{PM_{2.5}\;and\;PM_1}$ was 0.94. The inclusion rate of $\small{PM_{2.5}\;to\;PM_{10}}$ was $\small{41{\pm}7%}$ and that of $\small{PM_1\;to\;PM_{2.5}\;was\;32{\pm}4%}$. In addition, the $\small{CO_2}$ concentration had a positive relation with the number of people in a carriage, whereas the concentration of $\small{PM_{10}}$ had negative correlation to the number of people. In relation to these two pollutants we calculated using a regression equation (34.06+0.04$\small{CO_2}$(ppm)-0.09 PM10$\small{({\mu}g/m^3)}$($\small{R^2}$=0.30, p<0.01, n=707), that a maximum number of 61 persons would ensure that each pollutant is maintained below the criteria level, applicable to subway stations.
Keywords
subway carriage$\small{PM_{10}}$$\small{PM_{2.5}}$$\small{PM_1}$$\small{CO_2}$;
Language
Korean
Cited by
1.
다중회귀분석을 이용한 CO2배출량 추정모형,조한진;장성호;김영식;

한국환경보건학회지, 2008. vol.34. 4, pp.316-326
2.
지하철 역사 승강장의 PSD 설치에 의한 미세먼지 감소 효과,손종렬;정영림;박현희;오윤희;최원;김순근;

환경위생공학, 2009. vol.24. 4, pp.60-68
3.
서울 지하철 객차 내 PM10과 CO2의 농도 변화,손홍지;류경남;임종권;장경조;이기영;

한국환경보건학회지, 2009. vol.35. 6, pp.454-460
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