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지하철 전동차 객실에서의 PM_(10) 오염특성 파악에 관한 연구
오미석,박덕신,박은영 한국대기환경학회 2011 한국대기환경학회지 Vol.27 No.5
This study had the aim of characteristics of PM_(10) in subway cabins. PM_(10) was measured by times of day (rush and non rush hours) and seasons with real time PM_(10) sampler on the subway cabins of line 7. Filter samples were collected for evaluation of their elemental composition as well as identification of major sources of PM_(10) using a receptor model, PMF. PM_(10) concentration were the highest in the winter season both in the rush and non rush hours at 152.8 μg/m3, 90.2 μg/m3 respectively. The PM_(10) concentrations in rush hour were 30% higher compared to non rush hours. Based on the chemical information, the composition rare of inorganic elements was 52.5%, anions were 10.2% and others were 37.3%. Fe was the most abundant element and significantly correlated (p⁄0.01) with Mn (r=0.97), Ti (r=0.91), Cr (r=0.88), Ni (r=0.89) and Cu (r=0.88). Characterized PM10 sources by PMF in the cabin were soil and road dust related sources (27.2%), railroad related sources (47.5%), secondary nitrate sources (16.2%)and a Cl-factor mixed with a secondary sulfate source (9.1%).