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Journal of the Korean Society for Environmental Analysis 2018;21(4):281-291.
Contamination Characteristics of Hazardous Air Pollutants in Particulate Matter in the Atmosphere of Ulsan, Korea
울산시 미세먼지의 유해대기오염물질 오염 특성
이상진1, 김성준2, 박민규2, 조인규2, 이호영2, 최성득2
1울산과학기술원 도시환경공학연구부 (미사용)
2울산과학기술원
Abstract
Recently, long-range atmospheric transport (LRAT) from China is regarded as a major reason for elevated levels of particulate matter (PM) in Korea. However, local emissions also play an important role in PM pollution, especially in large-scale industrial cities. In this study, PM samples were collected at suburban, residential, and industrial sites in Ulsan, Korea. Polycyclic aromatic hydrocarbons (PAHs) and heavy metals were analyzed, and a potential human health risk assessment was conducted. The concentrations of PAHs and heavy metals in total suspended particles (TSP) increased during high PM10 episodes, and backward trajectory analysis verified the influence of LRAT from China during the high episodes. Furthermore, the concentrations of PAHs and heavy metals in PM2.5 and PM10 at the industrial site were higher than those at the residential site. The risk assessment of PAHs and heavy metals in PM2.5 suggested no significant health effects. The highest levels of PAHs were measured in the particle size of 0.32~0.56 μm at the residential site, and those of heavy metals were detected in the particle size of 1.8~5.6 and >18 μm, reflecting different major emissions sources for both groups. On the basis of this preliminary study, we are planning long-term monitoring and modeling studies to quantitatively evaluate the influence of industrial activities on the PM pollution in Ulsan.
Key Words: PAHs, Heavy metals, Risk assessment, Ulsan, Particulate matter


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