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Atmosphere 2016, 7(3), 33; doi:10.3390/atmos7030033

Factors Controlling the Variation of Aerosol Surface Area Concentrations Measured by a Diffusion Charger in Fukuoka, Japan

1
Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
2
Atmospheric Environment Research Group, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8569, Japan
3
Center for Regional Environmental Research, National Institute for Environmental Studies, Tsukuba, Ibaraki 305-8506, Japan
4
Tokyo Dylec Corp., Shinjuku, Tokyo 160-0014, Japan
5
Faculty of Science, Fukuoka University, Fukuoka 814-0180, Japan
*
Author to whom correspondence should be addressed.
Academic Editors: Shinji Wakamatsu and Shiro Hatakeyama
Received: 29 January 2016 / Revised: 9 February 2016 / Accepted: 17 February 2016 / Published: 26 February 2016
(This article belongs to the Special Issue Air Pollution in the Asia-Pacific Region)
View Full-Text   |   Download PDF [4166 KB, uploaded 1 March 2016]   |  

Abstract

The surface area of ambient aerosols can be considered as an index of toxicity because an increased surface area may be able to act as a catalyst for specific reactions between particles and cells, as well as a carrier for co-pollutants, such as gases and chemicals. The aerosol surface area concentration was measured together with black carbon (BC) and other chemical species such as organic compounds, sulfate, and nitrate in Fukuoka, Japan, and the effect of the chemical composition of aerosols on their surface area was investigated. Aerosol surface area concentration was highly correlated with BC concentration for the entire period. Day-of-week variation and diurnal variation also showed the strong correlation between aerosol surface area and BC. This implies that even though BC accounts for relatively small percentage (in this study, 3.5%) of PM2.5 mass, it should receive considerable attention when aerosol surface area is considered as an index of adverse health effects caused by exposure of the human body to aerosols. Sulfate aerosol does not usually affect aerosol surface area in Fukuoka, but it may occasionally have a significant effect when the airmass contains an excess amount of relatively smaller particles of sulfate derived from volcanic SO2. View Full-Text
Keywords: aerosol mass spectrometer (AMS); black carbon (BC); diffusion charging; nanoparticle surface area monitor (NSAM); PM2.5; volcanic emission aerosol mass spectrometer (AMS); black carbon (BC); diffusion charging; nanoparticle surface area monitor (NSAM); PM2.5; volcanic emission
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Okuda, T.; Yamazaki, H.; Hatoya, K.; Kaneyasu, N.; Yoshino, A.; Takami, A.; Funato, K.; Inoue, K.; Nishita, C.; Hara, K.; Hayashi, M. Factors Controlling the Variation of Aerosol Surface Area Concentrations Measured by a Diffusion Charger in Fukuoka, Japan. Atmosphere 2016, 7, 33.

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