자동차 배출가스 중 BTEX의 비율과 C 2 -benzenes의 상관성 연구

• Published in: 한국분무공학회지 Vol. 23; no. 4; pp. 185 - 191
• Main Authors: 문선희, Sunhee Mun, 정택호, Taekho Chung, 정성운, Sungwoon Jung, 김선문, Sunmoon Kim, 서석준, Seokjun Seo, 이승환, Seounghwan Lee, 김정화, Jounghwa Kim, 홍유덕, Youdeog Hong, 홍희경, Heekyoung Hong
• Format: Journal Article
• Language: Korean
• Published: 한국분무공학회 31.12.2018
• Subjects: BTEX(Benzene; C 2 -benzenes; Ethylbenzene; T/B ratio; Toluene; Vehicle Exhaust; X/E ratio; Xylene; X/E ratio; T/B ratio; C_2$-benzenes; BTEX(Benzene, Toluene, Ethylbenzene, Xylene); Vehicle Exhaust
• ISSN: 1226-2277; 2288-9051

Benzene, toluene, ethylbenzene and xylene (BTEX) were well known as ozone precursors from photochemical reactions and contribute to the formation of photochemical smog which pose health hazards. Also, some of these compounds directly affect the human health due to their toxicity such as benzene. In this study, BTEX ratios and correlation of C 2 -benzenes (xylenes, ethylbenzene) in vehicle exhaust from recreational vehicle (RV) and multi-purpose vehicle (MPV) were characterized using a chassis dynamometer. VOCs were collected by tedlar bag and a GC/MS system was used for their quantification. Among all of the BTEX, toluene has the highest concentration(more than 30% in composition of BTEX). The average ratio of toluene to benzene emissions (T/B ratio=2.2) was found in vehicle exhaust. The average m,p-xylene/ethylbenzene and m,p-xylene/o-xylene ratios were 1.0 and 3.0 respectively. As a result, it showed a good correlation between the C 2 -benzenes (R2=0.98~0.99). In the future, it can be used as a marker for effect evaluation to atmospheric environment by vehicle exhaust.