The thermal power sector has made very little progress in implementing the revised stack emission standards for suspended particulate matter (SPM), sulphur dioxide (SO2) and oxide(s) of nitrogen (NOx) notified in December 2015. The industry had raised several objections— the technology is not suitable for Indian coal, costs are too …
As the sudden fog over Delhi and NCR on Sunday stumped most people, environmentalists and meteorological experts said this was possibly the outcome of extremely high levels of pollution. The fog, they explained, was formed when moisture in the air reacted with particulate matter, a problem that specially plagues the …
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 …
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 …
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 …
Urban forests are a vital component of the urban ecosystems and are gaining importance as the quality of this ecosystem is deteriorating. The main problem with urban greening today, is that very little information is available to planners and legislators regarding the costs and benefits of urban trees. This factors …
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 …
there are inequalities even in the ways one is exposed to pollution. Researchers from New Delhi, in a study, say the poor are vulnerable to acute health risks from air pollution. People with an annual income of Rs 0.12-1 lakh get exposed to higher pollution than those of rich households …
madhya Pradesh's pollution authority has cracked the whip on 30 steel re-rolling mills in Sanwer industrial area. The mills have been incriminated under the Air (Pollution Control and Prevention) Act 1981. Madhya Pradesh Pollution Control Board's (mppcb) tests revealed that suspended particles in Sanwer were 650 per microgram per cubic …
Five years air monitoring study was carried out to assess the primary air pollutants present in the ambient air in Chennai city during 1999-2003 at two different sampling stations.
Urbanisation in India is more rapid in and around National Capital as well as the State Capitals and, over the years, these cities have become major centers for commerce, industry and education. Enormous increase in number of vehicles has resulted in increased emission of air pollutants and, as a result, …
The ambient air quality monitoring was carried during the May 2003 to April 2004 along the (NH-6) passing through Jalgaon city. The average concentration of SOx 64 μg/m3, NOx 58 μg/m3, particulates (>10 μ) 515 μg/m3 and respirable dust particulates 224 μg/m3 was reported at Prabhat during the study period …
the European Commission (ec), on July 15, 2005, announced the draft Euro v proposal, which primarily focuses on particulate matter (pm) and nitrogen oxides (nox) emissions from diesel cars. As expected, the proposed limits for diesel cars are very stringent. The ec is now inviting stakeholders to comment on the …
high-smoking zone: The number of smokers in Himachal Pradesh (HP) is alarmingly high. This despite the state having the second highest literacy rate in the country. Forty-five per cent of HP's population consists of smokers, according to Surender Kashyap, the head of the chest and tuberculosis department at Shimla's Indira …
a decade after air quality standards were set for respirable suspended particulate matter (pm10), the Union government is geared up to fix a maximum permissible limit for fine particulate matter (pm2.5) emissions. pm2.5 forms a major part of pm10 but is considered more hazardous than the latter. It is emitted …
The Western world has come a long way in its drive to reduce air pollution from vehicles. Just over a decade back, the focus was on total suspended particulate matter (which includes natural dust too) and the black smoke vehicles emitted. Epidemiological evidence made governments shift the focus to respirable …
Research on nanoparticle emissions from vehicles is still in the academic domain. This is largely because the uncertainty over formation of nanoparticles and their measurement methods. As a spillover, regulatory mechanisms are not yet able to take into account this new science. They still use mass of emitted particles
