Abstract
fhe present status of suspended particulate matter (SPM) pollution and countermeasures against it in Japan are summarized by discussing examples mainly in Osaka and Kawasaki.
The SPM air quality standard was not met at 43.3% of general monitoring stations, most of which are located in urban areas, in 1986. The emission control for stationary sources have been found to effective in Osaka and Kawasaki. However, the contributions of diesel emission and secondary particulate formation are still large. Therefore, it is necessary to take comprehensive countermeasures to control it completely.
Research results on SPM behavior in the atmosphere, diffusion model to deal with long life time particulates and qualitative secondary formation mechanism are inevitable to the future SPM control planning.
