- According to the WHO, air pollution is defined as limited to situations in which the outdoor ambient atmosphere contains materials in concentration, which are harmful to the environment and his/her surrounding environment.
- The nature, dimensions, and magnitude of air pollution depends on a variety of factors such as residence time of pollutants in the atmosphere, sources of pollutants, nature of pollutants, amount of pollutants, etc.
- The time of pollutants for which it stays in the atmosphere vary considerably depending upon the nature of the pollutant, on meteorological factors (amount of moisture, cloudiness, etc.) and on sink mechanism (vegetation, water bodies, etc.)
|AIR POLLUTANTS||Air pollutant is a material in the air that can have adverse effects on humans and the ecosystem.|
|Pollutants are classified as||According to their existence in nature, |
According to the form in which they persist after release into the environment