Roeland

Jan 02, 2014 11:09

(Beijing) In Pulse : Roeland commented on news Beijing Academy of Sciences identified six sources of PM2.5

Here is the chemist: secondary inorganic aerosol are mainly 3 compounds ammonium, nitrate and sulfate. They are formed in the atmosphere (hence the name secondary) as result of difficult chemical processes from precursor gasses ammonia, NOx and SO2. Cars emit NOX (NO and NO2) and contribute significantly to ... Full Comment>>