Abstract
The current studies for measurement of the mass concentration of particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers [SPM or PM10] in a ambient air were reviewed. The major contents are as follows: reference and equivalent methods for the suspendid particulate matter for purposes attainment and maintenance of the national ambient air quality standards of Japan, reference method for the determination of particulate matter as PM10 for purposes of determining attainment and maintenance of the primary and secondary national ambient air quality standards of U.S.A., portable samples for the monitoring of exposure level of individuals and the evaluate of spatial distribution of SPM.
