CHENNAI: The level of total suspended particulate matter (TSPM) in the ambient air at a traffic intersection in Vallalar Nagar during the 24 hour period ending 6 a.m. on Tuesday was 248 microgram/cubic metre. The permissible limit is 200 microgram/cubic metre.


Air conditioning in cars cuts out more than 80 per cent of germs, fungal spores and particles from outside air, providing a boon for people with respiratory problems or allergies, German scientists say.

National Task Force consisting of the representatives of the relevant sectors will be set up on control of Asthma while a joint action plan would be drawn up for control of Asthma through a participatory process.

This briefing note is the first of a 3-part series on the subject of pollution monitoring in India. The note will support the thematic online map on

This paper by SIM-air presents the past and the current air quality management in Delhi, India, including the discussions on the air pollution levels, sources of air pollution, and policy interventions of the past and on-going. It is based on a presentation delivered at the BioVision Conference in Lyon, France, in March, 2009.

Six in 10 U.S. residents -- more than 186 million people -- live in areas with dangerous levels of air pollution, the American Lung Association reported on Wednesday.

The air in many U.S. cities became dirtier last year, the association said in its annual "State of the Air" report.

CHENNAI: The level of respirable suspended particulate matter (RSPM) in the ambient air at residential area in Adyar and traffic intersection in V. Nagar recently was 30 microgram/cubic metre and 185 microgram/cubic metre respectively. The permissible limit is 100 microgram/cubic metre, according to a press release from Tamil Nadu Pollution Control Board.

The present study involves the performance evaluation of the USEPA ISCST3 model for prediction of short-term SO2 concentrations in the ambient environment of NLC complex.

Emerging technologies affect the social, economic and environmental dimensions of our world, often in ways that are entirely unanticipated. A study was carried out to assess the concentration of the critical pollutants, such as sulphur dioxide (SO2), nitrogen oxides (NOx) and suspended particulate matter present in the ambient air of a fertilizer industry during the year 2000.