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Atmosphere 2017, 8(7), 114; doi:10.3390/atmos8070114

Monthly and Diurnal Variation of the Concentrations of Aerosol Surface Area in Fukuoka, Japan, Measured by Diffusion Charging Method

1
Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522, Japan
2
Atmospheric Environment Research Group, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8569, Japan
3
Research Institute for Applied Mechanics, Kyushu University, Fukuoka 816-8580, Japan
4
Faculty of Science, Fukuoka University, Fukuoka 814-0180, Japan
5
Tokyo Dylec Corporation, Tokyo 160-0014, Japan
6
Department of Environmental Science, Fukuoka Institute of Health and Environmental Sciences, Dazaifu 818-0135, Japan
7
Center for Regional Environmental Research, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
*
Author to whom correspondence should be addressed.
Received: 6 May 2017 / Revised: 7 June 2017 / Accepted: 24 June 2017 / Published: 28 June 2017
(This article belongs to the Special Issue Morphology and Internal Mixing of Atmospheric Particles)
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Abstract

Observation of the ambient aerosol surface area concentrations is important to understand the aerosol toxicity because an increased surface area may be able to act as an enhanced reaction interface for certain reactions between aerosol particles and biological cells, as well as an extended surface for adsorbing and carrying co-pollutants that are originally in gas phase. In this study, the concentration of aerosol surface area was measured from April 2015 to March 2016 in Fukuoka, Japan. We investigated the monthly and diurnal variations in the correlations between the aerosol surface area and black carbon (BC) and sulfate concentrations. Throughout the year, aerosol surface area concentration was strongly correlated with the concentrations of BC, which has a relatively large surface area since BC particles are usually submicron agglomerates consisting of much smaller (tens of nanometers) sized primary soot particles. The slopes of the regression between the aerosol surface area and BC concentrations was highest in August and September 2015. We presented evidence that this was caused by an increase in the proportion of airmasses that originated on the main islands of Japan. This may enhance the introduction of the BC to Fukuoka from the main islands of Japan which we hypothesize to be relatively fresh or “uncoated”, thereby maintaining its larger surface area. View Full-Text
Keywords: Asian monsoon; black carbon; long-range transport; land and sea breeze; sulfate; surface area; surface coating of particles Asian monsoon; black carbon; long-range transport; land and sea breeze; sulfate; surface area; surface coating of particles
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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

Kiriya, M.; Okuda, T.; Yamazaki, H.; Hatoya, K.; Kaneyasu, N.; Uno, I.; Nishita, C.; Hara, K.; Hayashi, M.; Funato, K.; Inoue, K.; Yamamoto, S.; Yoshino, A.; Takami, A. Monthly and Diurnal Variation of the Concentrations of Aerosol Surface Area in Fukuoka, Japan, Measured by Diffusion Charging Method. Atmosphere 2017, 8, 114.

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