10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
Abstract View
The Concentrations of Aerosol Surface Area in Fukue Island, Japan, Measured by Diffusion Charging Method
MIHO KIRIYA, Tomoaki Okuda, Ayako Yoshino, Akinori Takami, Indra Chandra, Takafumi Seto, Koji Funato, Kozo Inoue, Keio University
Abstract Number: 155 Working Group: Aerosol Physics
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 augmented carrier surface for co-pollutants. In this study, the aerosol surface area concentration was measured together with black carbon (BC) and other chemical species such as organic compounds, sulfate, and nitrate on April 2017 in Fukue Island, Japan. The concentrations of aerosol surface area were highly correlated with those of BC, which has relatively large surface area since BC particles are usually submicron agglomerates consisting of much smaller (tens of nanometers) sized primary soot particles. Compared with the concentrations of aerosol surface area in Fukuoka city, those in Fukue Island did not increase at daytime. This was due to low BC concentrations because of small traffic volume in suburban area of Fukue Island. Also, there were some cases which the concentrations of aerosol surface area did not increase even though sulfate concentrations increased. According to the airmass backward trajectories analysis, those low surface area-high sulfate events seemed to be affected by the airmass from East China Sea.