Shinichi YONEMOCHI

Center for Environmental Science in Saitama

PM2.5 sequential sampler (2025i) was installed at the first building of Mt.Fuji meteorological station in order to clarify transboundary pollution of fine particulate matter such as PM2.5 in northeast Asia.

We carried out PM2.5 sampling in summer for three years.  This summer we conducted daily PM1 sampling in order to evaluate anthropogenic aerosols.  PM2.5 classifier was changed to PM1 SCC (sharp-cut cyclone) and daily PM1 was collected on PTFE filter from July 24 to August 21 with Kazo (CESS*), Shinjuku (Waseda university) and some sites in China and Korea simultaneously.

Filters were treated based on the reference method of PM2.5 measurement. Trend of daily PM1 mass concentration was shown in Fig.1.  Average concentration was 1.9±1.7 μg/m3. The highest concentration was 5.7 μg/m3 on July 24.