Smog Awareness and Knowledge of Precautionary Measures among General Population

Abstract

INTRODUCTION:

Smog, which is a kind of air pollution, is formed when smoke and fog are mixed under certain conditions that effect the visibility of the surrounding area. Smog has two types; photochemical smog and industrial smog. Photochemical smog develops in urban areas with heavy vehicular traffic which is a potential source of NO, hydrocarbons, and volatile organic compounds with enough sunlight and little movement of air (hot, dry climate). It is caused by a free- radical chain mechanism that converts NO to NO2 which further reacts to produce ozone, nitric acid, and peracylnitrates.