Study on the Distributions of VOCs, Aldehydes, PAHs Concentration in Seoul Metropolitan Area

수도권 지역에서 환경대기 중 유해대기오염물질 (VOCs, Aldehydes, PAHs) 농도분포 특성 연구

  • Han, Jin-Seok (Air Quality Division, Environmental Diagnostics Research Department, National Institute of Environmental Research) ;
  • Lee, Min-Do (Air Quality Division, Environmental Diagnostics Research Department, National Institute of Environmental Research) ;
  • Lim, Young-Jae (Air Quality Division, Environmental Diagnostics Research Department, National Institute of Environmental Research) ;
  • Lee, Sang-Uk (Air Quality Division, Environmental Diagnostics Research Department, National Institute of Environmental Research) ;
  • Kim, Young-Mi (Air Quality Division, Environmental Diagnostics Research Department, National Institute of Environmental Research) ;
  • Kong, Boo-Joo (Air Quality Division, Environmental Diagnostics Research Department, National Institute of Environmental Research) ;
  • An, Jun-Young (Wonju Regional Environmental Management Office) ;
  • Hong, You-Deog (Air Quality Division, Environmental Diagnostics Research Department, National Institute of Environmental Research)
  • 한진석 (국립환경과학원 환경진단연구부 대기환경과) ;
  • 이민도 (국립환경과학원 환경진단연구부 대기환경과) ;
  • 임용재 (국립환경과학원 환경진단연구부 대기환경과) ;
  • 이상욱 (국립환경과학원 환경진단연구부 대기환경과) ;
  • 김영미 (국립환경과학원 환경진단연구부 대기환경과) ;
  • 공부주 (국립환경과학원 환경진단연구부 대기환경과) ;
  • 안준영 (원주지방환경청) ;
  • 홍유덕 (국립환경과학원 환경진단연구부 대기환경과)
  • Published : 2006.10.31

Abstract

Although concentrations of hazardous air pollutants(HAPs) are very low in the atmosphere, a growing attention has been paid on such compounds due to their high toxicity and bioaccumulation potentials into human body. In order to control and manage the amount of these materials in ambient air, it is necessary to construct monitoring system of them and to know the current concentration level of HAPs above all. In this work, a wide range of HAPs has been measured in metropolitan area to recognize the present state of HAPs in this area. The measured concentration of VOCs was higher in order of Jeonnongdong, Jeongdong, and Yangsuri. The regional difference of VOCs concentration was also highest in spring. Its total VOCs was ranged from $15.17{\sim}41.45$ ppb. Benzene $0.43{\sim}2.32$ ppb showed similar concentration level with the result of previous researches in Seoul. This value is a little higher than the average concentration 0.92 ppb for national ambient air quality standards in Japan. The concentration of aldehydes in this study was lower than those of other researches. Previous works in Seoul metropolitan area showed that the concentration of formaldehyde and acetaldehyde were higher than 5 ppb. The concentration of gaseous and particulate PAHs was high in order of winter, spring, and summer More than 90% of PAHs with low molecular weight such as 2-rings and 3-rings PAHs existed in gas phase. On the other hands, PAHs with high molecular weight more than 5-rings PAHs almost existed in particulate. In spring, the concentration of gaseous PAHs was 24.38 $ng/m^3$ in Jeongdong. Among the particulate PAHs, the concentrations of Naphthalene, Benzo(b)fluoranthene, and Benzo(g, h, i)perylene were higher than others. Especially, the concentration of Benzo(a)pyrene, a important carcinogenic pollutant, was highest in winter 0.5 $ng/m^3$ and ranged from 0.03 to 0.3 $ng/m^3$ in spring and summer, which is lower than the monitoring result in 90's. These components were mainly originated from the vehicle exhaust or heating equipment use.

Keywords

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