2007 年 22 巻 3 号 p. 204-216
Atmospheric aerosol particles play an important role in atmospheric processes such as heterogeneous reactions and cloud formation, and climate system. Recently, the heterogeneous reaction on aerosol particles and their influences become one of growing interests. The reactions change the aerosol constituents and mixing states during the transport, and lead to changes in hygroscopic and optical properties. Recent analytical techniques and instruments provided new knowledge on the heterogeneous reactions and chemical/physical properties of aerosol particles. This manuscript reviews aerosol constituents, their mixing states and the contributions of heterogeneous reactions to chemical/physical properties on the basis of field aerosol observations.