Epa: in 2016, Beijing's air condition standard number of days is 198 days

To share in the China Daily on January 3 (xinhua Zheng Jin ran) released Tuesday by the Beijing environmental protection bureau, Beijing's air quality standard number 198, 2016, 12 days more than in 2015, the heavy pollution days 39 days, compared with 2015 less 7 days. In addition, the annual concentration of PM2.5 is 73 micrograms per cubic meter, fell 9.9% year on year. PM2.5 mainly from burning coal, motor vehicles and other emissions and secondary transformation.