자동차 배기가스 중 입자상 탄소성분 내 PAHs의 정성적 비율 추정

• Published in: 한국대기환경학회지 Vol. 30; no. 5; pp. 449 - 460
• Main Authors: 김종범(Jong Bum Kim), 이경빈(Kyoung Bin Lee), 김진식(Jin Sik Kim), 김창환(Chang Hwan Kim), 차용호(Yong Ho Cha), 권순박(Soon Bark Kwon), 배귀남(Gwi Nam Bae), 김신도(Shin-do Kim)
• Format: Journal Article
• Language: Korean
• Published: 한국대기환경학회 2014
• Subjects: 대기과학; OC/EC; TOT Method; 10< PAHs; PM< SUB> Vehicles; PM_{10}
• ISSN: 1598-7132; 2383-5346
• DOI: 10.5572/KOSAE.2014.30.5.449

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 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 ($2,007{\mu}g/m^3$), followed by motocycle ($1,066{\mu}g/m^3$), LPG vehicle ($392{\mu}g/m^3$), and gasoline vehicles ($270{\mu}g/m^3$). 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%).