Japan Geoscience Union Meeting 2019

Presentation information

[J] Poster

A (Atmospheric and Hydrospheric Sciences ) » A-AS Atmospheric Sciences, Meteorology & Atmospheric Environment

[A-AS04] Atmospheric Chemistry

Thu. May 30, 2019 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Tomoki Nakayama(Graduate School of Fisheries and Environmental Sciences, Nagasaki University), Yoko Iwamoto(Graduate School of Biosphere Science, Hiroshima University), Sakae Toyoda(Department of Chemical Science and Engineering, Tokyo Institute of Technology), Nawo Eguchi(Kyushu University)

[AAS04-P17] Evaluation of a mobile PM2.5 sensor and application to the measurements along the National route 1 and around Nagasaki University

*Kenta Kanegae1, Takayuki Yamasaki2, Wataru Okamoto2, Yutaka Matsumi2, Tomoki Nakayama1 (1.Nagasaki University, 2.Nagoya University)

Keywords:Compact PM2.5 sensor , Personal exposure, Mobile measurement

Short-term exposure of PM2.5, negatively impacts human health through respiratory disease (such as asthma and bronchitis) and cardiovascular diseases, and leads to premature death. Because PM2.5 is spatially and temporally variable and individuals also move in time and space, it is important to understand personal exposures of PM2.5 for better assessment of the health impact. We developed a palm-sized optical PM2.5 sensor with and Panasonic Corporation, and evaluated the performance for environmental monitoring at fixed sites [Nakayama et al. 2018]. This sensor was designed to measure PM2.5 mass concentrations by detecting light scattering intensities from individual aerosol particles with diameters greater than 0.3 µm. The small size, light weight, and low power consumption of the sensor are suitable for mobile personal exposure measurement. However, the sensitivity of the sensor can be change if the sensor is tilted or swung, because aerosol particles flow into the sensor via an updraft generated by a heater and flow rate may be change during tinting or swinging.
In this study, we investigate the performance of the PM2.5 sensor for mobile exposure measurements. The changes in the sensitivity of the sensor during tilting or swinging have been tested. Moreover, the change in the sensitivity of the sensor during walking has been investigated, by comparing the PM2.5 data during walking with those during standing. From the results of these tests, it was found that the sensor can be applied for mobile exposure measurements of PM2.5 mass concentration. We applied this sensor for the mobile measurements during walking along the National Route 1 (from Tokyo to Kyoto) for two weeks, and around Nagasaki University. The obtained PM2.5 data will be compared with those obtained at the surrounding ambient air monitoring stations (AEROS) and meteorological data to discuss the sources and transportation of PM2.5. We believe that this research will provide useful information for applications of the compact sensor to epidemiological research of health effects of PM2.5.

This work is supported by the Eco Solutions Company, Panasonic Corporation.

T. Nakayama, Y. Matsumi, K. Kawahito, Y. Watabe, Development and evaluation of a palm-sized optical PM2.5 sensor, Aerosol Sci. Technol., 52, 2-12, doi:10.1080/02786826.2017.1375078 (2018).