Air pollution- Air pollution is the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. There are many different types of air pollutants, such as gases, particulates, and biological molecules

The 5 major outdoor pollutant

Ozone (O3)

Nitrogen Oxides (NOx)

Carbon Monoxide (CO)

Sulfur Dioxide (SO2)

Particulate Matter (PM10 and PM2.5)

The Major Gas Pollutants

Sulfur Dioxide
Carbon Monoxide

Ozone and Gaseous photochemical oxidants

Nitrogen Oxides

Volatile and semi-volatile organic compounds

Ammonia

Gaseous Pollutants

Particulate Matter

Particulate

Contaminant

Adsorption

Aerosol

Suspended Solid Particles (Particulate Matter) - 

Particulates – also known as atmospheric aerosol particles, atmospheric particulate matter, particulate matter, or suspended particulate matter – are microscopic particles of solid or liquid matter suspended in the air

Major Suspended Solid Particles

The Significant portion of PM sources is generated from a variety of human (anthropogenic) activity.