Air pollution

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Introduction to Air Pollution

Air pollution is the presence of foreign substances in the atmosphere, emitted by industries and motor vehicles that cause damage to living organisms.

Air pollution characteristics

Air pollution characteristics in a particular region are influenced by:

The type and amount of pollutant and their source of emission. The topographical and meteorological conditions affecting dispersion, concentration and transboundary transport of pollutants. The type of technology and various raw materials used in the manufacturing process and the type and quantum of emissions. The extent of industrialization and population density.

Air Pollutants

Sources of air pollutants

Major sources of air pollution are natural sources and man-made source.

A. Natural sources:

Volcanic eruptions, forest fires, deflation of sands and dusts, storms, etc.

Pollutants from natural sources

Volcanoes: ashes, smokes, carbon dioxide dust and other gases.

Land surface: salts spray from seas and ocean, dusts and soil particles from ground-surface.

Extraterrestrial bodies: cosmic particles and rays, chest produced due to bombardment of asteroid materials, comets etc. with the earth.

B. Man-made (anthropogenic) sources

Industries, automobiles, agriculture, power plants, domestic sources, etc.

Pollutants from manmade sources

Industries: smokes, fumes, dust, particulate matters.

Domestic sources: gases from kitchen, domestic heating.

Automobiles: smoke, fumes, emissions from different vehicles.

Agriculture: insecticides, pesticides and herbicides.

Power plants: heat from the power plants, smokes, fly ash.

Introduction to Air Pollution

Air pollution is the presence of foreign substances in the atmosphere, emitted by industries and motor vehicles that cause damage to living organisms.

Air pollution characteristics

Air pollution characteristics in a particular region are influenced by:

The type...
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