This work presents an estimate of the air pollution from municipal solid waste transport haulage sector for the city of Kolkata. About 3000 MT/day of solid waste are generated in the city presuming generation rate of 450-500 gm/capita resident/day. On an average, 205 private carriers transport 60% of daily generated garbage (responsible for 44% of total air pollutants from municipal solid waste transport), while around 109 nos. of departmental vehicles transport the remaining 40% of waste (responsible for 56% of total pollution emission from waste transport).

Mumbai: A day after two young research scientists died in a massive fire at the Bhabha Atomic Research Centre, the organisation is investigating if there were any lapses or carelessness on their part.

A day after two research scientists in the Radiation and Photochemistry Department of the Bhabha Atomic Research Centre (BARC) were killed in a fire in their laboratory, the postmortem report concluded that the bodies had 100 per cent burns due to a chemical explosion, followed by a fire.

The Centre on Wednesday announced that both industrial and residential areas will not have different standards for air quality norms. In a major move to bring down the air pollution levels, the Centre unveiled tougher new air quality norms. The revised guidelines have added five more hazardous chemicals in the list of the National Ambient Air Quality Standards (NAAQS) for monitoring.

The Ministry of Environment and Forests (MoEF) has notified the Revised National Ambient Air Quality Standards (NAAQS), 2009, which provide a legal framework for control of air pollution and protection of public health. The revised norms have come 15 years after the Central Pollution Control Board (CPCB) had notified the previously existing NAAQS in 1994.

Revised National Ambient Air Quality Standards 2009 released by the Ministry of Environment and Forests. As per these norms, the residential & industrial areas will have the same standards. Includes limits for benzene, ozone, benzopyrene, arsenic, nickel and ammonia not covered in 1994.

Over the past two decades the issue of air pollution in the
Kathmandu Valley has become of increasing concern as
concentrations of ambient air pollution exceed international
air quality guidelines and standards. The steady growth in
road traffic has resulted in the increasing contribution of
vehicle emissions to urban air pollution, especially particulate

Results of ambient air quality monitoring carried out during 2008 at various monitoring stations under National Air Quality Monitoring Programme by the CPCB.

Recent evidence has shown that humans metabolize benzene more efficiently at environmental air concentrations than at concentrations > 1 ppm. This led the researchers to speculate that an unidentified metabolic pathway was mainly responsible for benzene metabolism at ambient levels.

The International Fuel Quality Center recently released a ranking of the top 100 countries based on the lowest benzene limits in gasoline. Colombia was at the top of the ranking with the lowest limit, followed by Canada and Luxembourg.

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