Abstract
The recent activities in research and developments of PM2.5 mass monitoring and its chemical speciation were introduced. Major chemical components of recent PM2.5 in Japan were sulfate, nitrate, ammonium, organics, and elemental carbon. In order to avoid or suppress artifacts derived from their sampling and/or analyses of those chemical components, this paper reviews several sampling methods with an annular-denuder filter-pack and related analysis or high-time resolution monitoring method such as a thermal-optical reflectance carbon analysis and an Aerodyne aerosol mass spectrometer. The advantages and limitations of their methods are discussed.
