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Analysis of Organic Aerosol in Fukuoka, Japan Using a PMF Method

Category: Aerosol and Atmospheric Chemistry

Volume: 16 | Issue: 2 | Pages: 314-322
DOI: 10.4209/aaqr.2015.03.0145
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Akinori Takami 1, Takao Miyoshi1, Satoshi Irei1, Ayako Yoshino1, Kei Sato1, Atsushi Shimizu1, Masahiko Hayashi2, Keiichiro Hara2, Naoki Kaneyasu3, Shiro Hatakeyama4

  • 1 National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
  • 2 Faculty of Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka, Fukuoka 814-0180, Japan
  • 3 National Institute of Advanced Industrial Science and Technology, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
  • 4 Graduate School of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan

Highlights

The PMF method is applied to data obtained by Q-AMS in Fukuoka.
LV-OOA was dominant during the trans-boundary air pollution period.
Trans-boundary air pollutions can be distinguished from local ones using LV-OOA.


Abstract

Aerosol chemical species were measured using an Aerodyne quadrupole aerosol mass spectrometer (Q-AMS) in spring 2010, in Fukuoka. The main species were sulfate and organics. Organic data were analyzed using the Positive Matrix Factorization (PMF) method. Two distinct periods (Period 1 and 2) were selected. Period 1 (from March 19 at 19:50 to March 20 at 10:00) was influenced by trans-boundary air pollution. Low-volatile, oxygenated organic aerosols (LV-OOA) were dominant and the hydrocarbon-like organic aerosols (HOA) fraction was as low as 15%. About one-fourth (26%) of the observation period in Fukuoka was influenced by trans-boundary air pollution. In Period 2 (from March 22 at 00:00 to March 22 at 23:50), both local emissions and trans-boundary air pollutants influenced Fukuoka air quality. The HOA fraction was relatively high, although the LV-OOA fraction was about one-third of OA. The trans-boundary air pollution was analyzed using the oxidation state of organic aerosols (OA), obtained by the PMF method.

Keywords

AMS Organic Sulfate PMF LV-OOA


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