Air Pollution Types


 * ash
 * carbon monoxide
 * CH4
 * CO2
 * dust
 * gases from combustion
 * gases from organic decomposition
 * grit
 * H2S
 * HF
 * liquid droplets and acid deposition
 * noise
 * NOx (nitrogen oxides)
 * ozone
 * PAN8
 * sea-salt particles
 * smoke
 * smoke and ash
 * SO2 (sulfur oxides)
 * soot
 * tarmac and rubber particles
 * volcanic dust
 * volcanic gases and water vapor