Japan Geoscience Union Meeting 2018

Presentation information

[EJ] Oral

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

[A-AS06] Atmospheric Chemistry

Thu. May 24, 2018 10:45 AM - 12:15 PM A05 (Tokyo Bay Makuhari Hall)

convener:Yoko Iwamoto(Graduate School of Biosphere Science, Hiroshima University), Tomoki Nakayama(Graduate School of Fisheries and Environmental Sciences, Nagasaki University), Sakae Toyoda(東京工業大学物質理工学院, 共同), Nawo Eguchi(Kyushu University), Chairperson:Saitoh Naoko(Chiba University)

11:15 AM - 11:30 AM

[AAS06-13] Big data era and compact atmospheric environmental sensors for PM2.5 and pollution gases such as NOx: Developments and their applications

*Yutaka Matsumi1, Shungo Kato2, Tomoki Nakayama1, Takayuki Yamasaki1, Wataru Okamoto1 (1.Institute for Space-Earth Environmental Research, Nagoya University, 2.Tokyo Metropolitan University)

Keywords:PM2.5 measurement, compact atomspheric environmental sensors , Big daya era

A new palm-sized optical PM2.5 sensor has been developed and its performance evaluated. We also developed instruments for multiple gas components with small sensors for pollution gases such as CO, Ox, NO, NO2 and SO2. We are measuring those components in polluted areas and a volcano crater. The PM2.5 sensor was originally developed by Nagoya University and Panasonic Corporation. The pollution gas sensors are electrochemical detectors which are commercially available. We have integrated these sensors in a small compact box. These kind of instruments can be distributed everywhere. We can collect big data from the instruments which are utilized in every school, every home, every car and train. The data of the instruments will be useful in everyone's environmentally healthful life. We have checked the specifications of the sensors. The PM2.5 mass concentration is calculated from the distribution of light scattering intensity by considering the relationship between scattering intensity and particle size. The results of laboratory tests suggests that the sensor can detect particles with diameters as small as »0.3 mm and can measure PM2.5mass concentrations as high as 1000 ug/m3. Year-round ambient observations are conducted at many urban and suburban sites in Japan and in Asian foreign countries. We also checked the performances of the electrochemical sensors.