Percentage of locations exceeding NAAQS in residential industrial rural areas

Importance of National Ambient Air Quality Standards

Air Pollutant includes any substance in solid, liquid or gaseous form present in the atmosphere in concentrations which may tend to be injurious to all living creatures, property and environment. Various contaminants in different forms from both man-made and natural sources perpetually enter our environment and contaminate it causing toxicity, diseases and environmental decay. Recent industrialization and increased number of potent air polluting sources like automobiles, landfills, etc. has gushed into the atmosphere toxic materials which not only harm human40

Warneckii plant

Houseplants – Nemesis For Indoor Air Pollution

The energy crunch witnessed by the world in the late 1970s forced people to design and resort to energy efficient techniques and practices, which also included energy efficient buildings. Energy efficient housings brought in the trend of buildings which were super-insulated and had reduced free exchange of fresh air. It was eventually realized that these buildings having tighter and congested construction, sealed from outside air was more prone to accumulation of indoor air pollutants to dangerous levels, greatly affecting the40

Vehicular emissions

Uniform implementation of Bharat Stage –IV and V norms by 2020 can improve air quality, says TERI study

As per a TERI (The Energy Research Institute) study, a uniform implementation of Bharat Stage (BS) IV norms and of BS V norms by 2020 across the country can improve air quality and health of city dwellers. TERI compared a business as usual (BAU) scenario with three alternative scenarios when fuel emission norms upgraded to BS IV and V have been assessed with PM 2.5 levels (fine respirable particles) and NOx (nitrogen oxides) levels. The study concluded that in a40