Characterization of chemical components of PM2.5 long-range transported by simultaneous observation in China, South Korea and Japan

Center for Environmental Science in Saitama



Shiro HATAKEYAMA、Yuichi HORII (Center for Environmental Science in Saitama), Hiroshi OKOCHI (Waseda University), Ki-ho Lee, Chul-goo Hu (Jeju National University, Korea)



PM2.5 sequential sampler (2025i) was installed at the first building of Mt.Fuji meteorological station in order to clarify transboundary pollution of PM2.5 in north East Asia and PM2.5 samples were collected on PTFE filter. Sampling was carried out during around one month from July 21 with Kazo, Shinjuku (Waseda university), some sites in China and South Korea during two weeks in August simultaneously.


Filters were treated based on reference method of PM2.5 measurement. Trend of PM2.5 mass concentration was shown in Fig.1. 12-hours average concentration was 1.3±1.3 μg/m3. The highest concentration was 5.0 μg/m3 on daytime, July 25. Difference of concentration was not found between daytime and night-time.

                                         Fig.1   Trend of PM2.5 mass concentration