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Transported and Local Organic Aerosols over Fukuoka, Japan

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Volume: 13 | Issue: 4 | Pages: 1263-1272
DOI: 10.4209/aaqr.2013.01.0006
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Kei Sato 1, Akinori Takami1, Satoshi Irei1, Takao Miyoshi1, Yoshimi Ogawa2, Ayako Yoshino2, Hiroyasu Nakayama2, Megumi Maeda2, Shiro Hayakeyama2, Keiichiro Hara3, Masahiko Hayashi3, Naoki Kaneyasu4

  • 1 National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
  • 2 Tokyo University of Agriculture and Technology, 3-5-8 Saiwaicho, Fuchu, Tokyo 183-8509, Japan
  • 3 Fukuoka University, 8-9-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
  • 4 National Institute of Advanced Industrial Science and Technology, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan


In order to understand transported and local pollution in an urban area that are strongly affected by long-range transport of air pollution, daily concentrations of 15 polycyclic aromatic hydrocarbons (PAHs) and 20 n-alkanes in the total suspended particles were simultaneously measured at sites in Western Japan on Fukue Island (FI), located downwind of mainland East Asia, and Fukuoka City (FC), a megacity close (< 200 km) to the FI site, in spring and winter 2010 and summer 2011. The average total PAH concentration observed at the FC site (2.93 ± 2.17 ng/m3) was higher than that at the FI site (1.78 ± 1.70 ng/m3). The average total n-alkane concentration at the FC site (34.7 ± 21.8 ng/m3) was also higher than that at the FI site (12.2 ± 9.2 ng/m3). However, the total PAH and n-alkane concentrations measured at the FI site were considerably high, despite its remote location. The seasonal changes in the specific PAH ratios, used to determine the source of pollutants, were similar between the FC and FI sites. The average fluoranthene/(fluoranthene + pyrene) ratio was 0.57–0.65 in winter and spring and 0.48–0.51 in summer. PAHs observed at both sites mainly originated from coal or biomass combustion in spring or winter, whereas those were affected by petroleum combustion as well as coal and biomass combustion in summer. These field results show that transported pollutants make a significant contribution to the total PAHs and n-alkanes at the FC site in the winter and spring seasons.


Long-range transport East Asia Polycyclic aromatic hydrocarbon n-Alkane Air quality control

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