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Open AccessArticle

Spatial Mapping of a Highly Non-Uniform Distribution of Particle-Bound PAH in a Densely Populated Urban Area

1
Clean Air Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
2
School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Korea
3
Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea
4
Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
5
Seohaean Research Institute, ChungNam Institute, Chungcheongnam-do 32258, Korea
6
Research Management Team, R&D Center for Green Patrol Technologies, Seoul 05029, Korea
7
Climate & Air Quality Research Department, National Institute of Environmental Research, Ansan 15353, Korea
8
Center for Particulate Air Pollution and Health, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
9
Environmental Health Center, University of Ulsan College of Medicine, Ulsan 44033, Korea
*
Author to whom correspondence should be addressed.
Atmosphere 2020, 11(5), 496; https://doi.org/10.3390/atmos11050496
Received: 18 March 2020 / Revised: 1 May 2020 / Accepted: 7 May 2020 / Published: 12 May 2020
(This article belongs to the Special Issue Roadside Air Pollution)
In this work, a 2-D gridded air pollution map with a high resolution of 50 × 50 m2 was proposed to help the exposure assessment studies focusing on the association between air pollutants and their health effects. To establish a reliable air pollution map in a 2 × 2 km2 urban area, a mobile monitoring procedure and a data process were developed. Among the various vehicle-related air pollutants, the particle-bound polycyclic aromatic hydrocarbon (pPAH) was chosen as a sensitive indicator. The average pPAH concentration on major roads (293.1 ng/m3) was found to be 35 times higher than that at a background location (8.4 ng/m3). Based on the cell-based pPAH concentrations, the 50 × 50 m2 cells in the air pollution map were categorized into five pollution levels. The higher air pollution levels were generally shown by the cells close to the major traffic emission points. The proposed map can be used to make various policies regarding land use and traffic flow control in urban areas. Estimation of the personal exposure level to air pollutants is possible at a reliable location using the highly resolved 2-D gridded air pollution map in exposure assessment studies. View Full-Text
Keywords: air pollution map; exposure assessment; mobile laboratory; particle-bound polycyclic aromatic hydrocarbon; urban area air pollution map; exposure assessment; mobile laboratory; particle-bound polycyclic aromatic hydrocarbon; urban area
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Kim, K.H.; Kwak, K.-H.; Lee, J.Y.; Woo, S.H.; Kim, J.B.; Lee, S.-B.; Ryu, S.H.; Kim, C.H.; Bae, G.-N.; Oh, I. Spatial Mapping of a Highly Non-Uniform Distribution of Particle-Bound PAH in a Densely Populated Urban Area. Atmosphere 2020, 11, 496.

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