Air Pollution and Its Control

This paper discusses air pollution: Classes of pollutants, effects, control techniques and L.A. air pollution.

Major air pollutants include carbon monoxide, sulfur dioxide, nitrogen oxides, hydrocarbons, photochemical oxidants, particulate matter and lead. Additionally, a wide variety of other chemical gasses, mists, fumes and particles have the potential to pollute the air. Some seemingly harmless substances, such as wheat flour, may be considered local pollutants when dust impairs the breathing of workers.

Three air pollutants are frequently discussed together due to interrelated chemistries. These include hydrocarbons (HC), nitrogen oxides (NOx) and photochemical oxidants, especially ozone (O3). The family NOx includes nitrogen oxide (NO), nitrogen dioxide (NO2), ammonia (NH3) and other nitrogen …