EFFECTS OF PHOTOCHEMICAL SMOG:

Photochemical smog is oxidizing smog owing to the presence of NO₂ and O₃, causing corrosion of metals, stones, rubber, and painted surfaces. The other major components of photochemical smog are PAN, acrolein, and formaldehyde. Both PAN and ozone are eye irritants, while nitric oxide (formed from NO₂) causes nose and throat irritation. At higher concentrations, photochemical smog causes chest pain, headaches, throat dryness, and various respiratory ailments.

CONTROL MEASURES:

Photochemical smog results from the burring of fossil fuels and automobile fuels that emit NO₂ and hydrocarbons, which in turn form ozone, PAN, and other chemicals. The use of catalytic converters in automobiles is recommended to prevent the release of NO₂ and hydrocarbons into the atmosphere. Plantation of plants such as Pinus, Juniparur, Quercus, Pyrus, and Vitis is also advised as these plants have the capability to metabolize NO₂.