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E10: Smog by Mind Map: E10: Smog
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E10: Smog


Usually in large cities, especially ones that are:

Bowl-shaped, as this traps air/chemicals,

Large, with many tall buildings, as this again traps air/chemicals,

Suffering from a temperature inversion.

Photochemical Smog

Most common modern type of smog

Note characteristic yellow/red colour, caused by VOCs

Secondary Pollutants

Formed by reaction of oxygen radicals with oxygen and water to form ozone and hydroxyl radicals.

These then react with a variety of molecules to form...

Nitric Acid

Peroxides ROOR, Extremely reactive, Can react with nitrogen dioxide in a Chain Reaction to form peroxyacylnitrates (PANs), Eye irritants, Toxic to plants

Aldehydes RCHO

Ketones RCOR, Reduce visibility

Formation of Secondary Pollutants

Primary Pollutants

Nitrogen oxides

Volatile Organic Compounds (VOCs)

New node