摘要
Air pollutants have serious health effects on human beings. The 2010 Global Burden of Disease study reports that each year, ambient particulate matter （PM2.5, particles with aero- dynamic diameter 〈 2.5 micrometer） is causing 3.2 million premature deaths globally, and 1.2 million in China alone. Ambient PM pollution ranked fourth among all risk factors in China.
Air pollutants have serious health effects on human beings.The 2010 Global Burden of Disease study reports that each year,ambient particulate matter(PM2.5,particles with aerodynamic diameter<2.5 micrometer)is causing 3.2 million premature deaths globally,and 1.2 million in China alone.Ambient PM pollution ranked fourth among all risk factors in China[1].
