Ozone (O3), Peroxy-acyl nitrile(PAN) and Photochemical smog

Ozone (O3), Peroxy-acyl nitrile(PAN) and Photochemical smog

Characteristics of Ozone (O3), Peroxy-acyl nitrile(PAN) and Photochemical smog
a) Pale blue gas.
b) Fairly water soluble, unstable and sweetish odour.
c) Very reactive oxidizing agent.
d) Capable of combining with many organic compounds in cells and tissues as well as rubber and other materials.
e) Ozone (O3) and Peroxy-acyl nitrile(PAN) are harmful to animals and humans.


Biochemical effects of Ozone (O3), Peroxy-acyl nitrile(PAN) and Photochemical smog
a) Oxidize cellular constituents.
b) Produce free radicals which are capable of producing toxic compounds.
c) Damage the DNA and reduce the genetic power.
d) Both Ozone (O3) and Photochemical smog causes eye irritation and respiratory tract.
e) Causing damage of lung capillaries.
f) Ozone may inhibit the activity of some enzyme involved in synthesis of cellulose and lipids in plants.
g) The Sulphur containing amino acid, example: Cystine are strongly attacked by PAN.