Indoor particulate matter (PM2.5) pollution situation,control technologies and standards

The survey of indoor PM2.5 pollution situation shows that the different degrees of indoor PM2.5 pollution exist in the different types of buildings and cities, with maximum indoor PM2.5 concentration of over 500 μg/m3. The effective control technologies are the important approaches to decrease the indoor PM2.5 pollution. Presents the active control and passive control methods. Summarizes the foreign and Chinese standards of PM2.5 pollution control. Suggests the future research and development for indoor PM2.5 control based on indoor PM2.5 pollution situation, control technologies and standards.