Photochemical smog

From Environmental Technology

Photochemical smog is a mixture of pollutants which includes particulates, nitrogen oxides, ozone, aldehydes, peroxyethanoyl nitrate (PAN), unreacted hydrocarbons, etc. The smog often has a brown haze due to the presence of nitrogen dioxide. It causes painful eyes.

The Cause

The condition needed for the formation of the smog are present in modern cities. They included sunlight, hydrocarbons, nitrogen oxides and particulates which act as catalyst.

These are the equations in the formation of photochemical smog.

[edit] reference

http://hk.geocities.com/xavier114fch/03/03b.htm