Transported and Local Organic Aerosols over Fukuoka, Japan

Kei Sato; Akinori Takami; Satoshi Irei; Takao Miyoshi; Yoshimi Ogawa; Ayako Yoshino; Hiroyasu Nakayama; Megumi Maeda; Shiro Hayakeyama; Keiichiro Hara; Masahiko Hayashi; Naoki Kaneyasu

doi:10.4209/aaqr.2013.01.0006

Transported and Local Organic Aerosols over Fukuoka, Japan

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

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

Received: January 6, 2013
Revised: April 1, 2013
Accepted: April 1, 2013
Download Citation: ||https://doi.org/10.4209/aaqr.2013.01.0006

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Cite this article:
Sato, K., Takami, A., Irei, S., Miyoshi, T., Ogawa, Y., Yoshino, A., Nakayama, H., Maeda, M., Hayakeyama, S., Hara, K., Hayashi, M. and Kaneyasu, N. (2013). Transported and Local Organic Aerosols over Fukuoka, Japan. Aerosol Air Qual. Res. 13: 1263-1272. https://doi.org/10.4209/aaqr.2013.01.0006

ABSTRACT

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.

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