Secondary Pollutants
( UPSC Prelims)
News Context
A study conducted by the Centre for Research on Energy and Clean Air (CREA) revealed that secondary pollutants contribute to almost one-third of India's PM2.5 pollution.
Secondary Pollutants
Secondary pollutants are created in the atmosphere through chemical or physical interactions involving primary pollutants or between these pollutants and other atmospheric components. The sources of these pollutants include primary pollutants, sunlight, and specific atmospheric conditions. Examples of secondary pollutants are ozone (O3), sulfuric acid (H2SO4), and nitric acid (HNO3), among others.