The Qualitative Rate Estimation of PAHs in Carbon Compounds of Particles in Vehicles Exhaust Gas
Journal of Korean Society for Atmospheric Environment
자동차 배기가스 중 입자상 탄소성분 내 PAHs의 정성적 비율 추정
) •배귀남 1) •김신도 2), * 1) 한국과학기술연구원 환경복지연구단, 2) 서울시립대학교 환경공학과, 3) (주)태원시바타 4) 한국환경공단 환경분석처, 5) 한국철도기술연구원 교통환경연구팀 (2014년 7월 23일 접수, 2014년 9월 19일 수정, 2014년 10월 8일 채택) Abstract Since the emergence of domestically produced automobiles in 1964, the number of automobiles in circulation in South Korea has increased constantly. With this rapidly increasing number of automobiles, automobile-induced environmental pollution has become an issue of great concern, especially with regard to air pollution. Of
... ir pollution. Of the carbon composites contained in automobile exhaust gas, PAHs are known to be carcinogenic and highly deleterious to humans and thus need to be urgently mitigated. To address this issue of PAHs, this study was conducted to estimate qualitative of particulate PAHs contained in carbon composites in automobile exhaust gas, by capturing all particulate matter discharged from the latter. To allow for differentiated analyses, the automobiles investigated were divided into 4 groups: gasoline vehicle, motocycle, diesel vehicle, and LPG vehicle. Samples were analyzed using two methods. First, in-depth analysis was performed on organic carbon (OC) and elemental carbon (EC) composites with analysis parameters, using the Thermal Optical Transmittance Method (NIOSH 5040). Second, for the examination of particulate PAHs, GC/MSD was used to analyze the 16 PAH species specified by the Environmental Protection Agency (EPA). The analyses yielded the findings that diesel vehicles had the highest mass concentration (2,007 μg/ 기술자료 16.5 ng/m 3 로 보고하였다. 그리고 Han et al. (2006)은 서울 전농동의 PAHs 농도를 9.2 ng/m 3 로 보고하는 등 수도권 지역의 대기 중에서 9.2~19.5 ng/m 3 으로 PAHs가 분포되어 있는 것을 확인할 수 있었다. 이처 한국대기환경학회지 제 30 권 제5 호 450 김종범•이경빈•김진식•김창환•차용호•권순박•배귀남•김신도 m 3 ), followed by motocycle (1,066 μg/m 3 ), LPG vehicle (392 μg/m 3 ), and gasoline vehicles (270 μg/m 3 ). The highest carbon concentrations in total particulate matter by vehicle weight were produced from LPG vehicle (79.8%), followed by gasoline vehicle (77.4%), motocycle (69.8%), and diesel vehicle (59.1%).