Volume : III, Issue : III, March - 2014

Studies on Atmospheric Pollution Over New Delhi–A Mega City in India

Dr. G. Sudhakar, Prof. D. Punyaseshudu, Dr. M. Shanawaz Begum

Abstract :

Air pollutants released from various sources affect directly or indirectly man and his environment. The resulting ground level concentration patterns have to be estimated for a wide variety of air quality analyses for social planning and industrial growth. Air pollutants emitted from different sources are transported, dispersed or deposited by meteorological and topographical conditions. Pollutants are substances which, when present at high enough concentrations, produce harmful effects on people and/or the environment. Air pollution was first perceived as a local problem in urban industrialized areas, hence taller smoke–stacks for industries and power plants were a ready solution. Urban population is growing very rapidly throughout the world, besides the world population is urbanizing much faster than is growing.Air pollutants in New Delhi arise from a wide variety of sources although they are mainly a result of combustion processes. Today, the largest source of pollution in most urban areas is motor vehicles, and to a lesser extent industry. Traffic–generated pollutants include nitrogen oxides, carbon monoxide, volatile organic compounds and particulates. On warm summer days the strong sunlight leads to a buildup of ozone through the oxidation of volatile organic compounds (VOCs) such as benzene in the presence of nitrogen oxides. However, due to the special atmospheric chemistry of ground level ozone, levels are very often lower in urban areas than in the countryside.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

Dr. G. SUDHAKAR, PROF. D. PUNYASESHUDU, Dr. M.SHANAWAZ BEGUM Studies on Atmospheric Pollution Over New Delhi-A Mega City in India International Journal of Scientific Research, Vol.III, Issue.III March 2014

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