Major Secondary Pollutants

Smog

  • Smog (Smoke+ Fog) is a type of intense air pollution.
  • The formation of photochemical smog involves three primary ingredients: nitrogen oxides, hydrocarbons and sunlight.
  • Main Components of Photo chemical smog: Nitrogen Oxides, Volatile Organic Compounds (VOCs), Ozone and PAN (Peroxyacytyl Nitrate).

Ground level ozone (O3)

  • Ozone at ground level is a harmful air pollutant, because of its effects on people and the environment, and it is the main ingredient in smog.
  • Tropospheric, or ground level ozone, is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC).
  • Affects the climate beyond increased warming, having ....
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