抄録
From January 2013, severe air pollution in Chinese cities including Beijing was reported and Japanese people were afraid of PM2.5 as a new toxic substance. JAAST provided the information about PM2.5 using the official homepage. People are very much concerned whether the commonly used masks are effective against PM2.5. This article introduces health effect of aerosol inhalation, structures of surgical masks and dust respirators, performance of fibrous filters against aerosol particles, and fitness between masks and wears. In terms of effectiveness of masks, the fitness of masks is more important than the filter performance against aerosol particle inhalation.
