A study of air pollution was carried out in Aizawl city during 2006

A case study is done in Salem City, India for ambient air quality for major air pollutants for a period of one year from Oct 2003 to Sep 2004 at the six selected stations. (2007)

Chennai Metropolitan Area extends over 1180 sq. km and has a population of more than 8.5 million. Rapid increase in urbanization with vehicle congestion has increased menacingly on the roads of Chennai. As a result of this, gaseous pollutants and respirable and suspended particulate matter pollutants are continuously increasing in the ambient air of Chennai city. These pollutants have been assessed using high volume sampler at residential and traffic intersection sampling stations in Chennai City.

Air Quality Impact Assessment studies of Singoli Bhatwari Hydroelectric Power Plant are reported. The plant site is connected to the dam site via a road. Computations of four pollutants namely Carbon Monoxide, Sulphur Dioxide, Oxides of Nitrogen and Suspended Particulate Matter have been made at various sites around the plant using CALINE-3 model. Sources considered responsible for air pollution are vehicular traffic on road and construction activities around the plant site.

Data generated by CPCB of ambient air quality in various cities and towns of India under National Air Quality Monitoring Programme (NAMP) have been analyzed. A decreasing trends has been obseved in ambient sulphur dioxide levels in many cities like Delhi, Hyderabad, Kanpur, Lucknow, Mumbai etc. This may be due to various interventions like reduction of sulphur in diesel, use of CNG as the vehicular fuel in Delhi and Mumbai etc.

Air quality deterioration, especially in urban areas of developing countries, is one of the most alerting problems of modern civilization. Present investigation shows the impact of atmospheric deposition on accumulation and translocation of heavy metals in different parts of wheat plants. Results depicted that metal accumulation was higher at sites with higher pollution load than sites having less pollution.