Good morning friends. Pollution has been as any significant change in the physical, chemical or biological characteristics of the air, water and land that many negatively affect mankind, whether directly by being harmful to people or indirectly by causing natural resources to deteriorate.
Despite early warnings, the level of ozone, known to be extremely harmful for health, in Delhi has been rising steadily. According to CSE latest findings, ozone levels have been unusually high this year, very often much above the standards proposed by the environment ministry. This is a direct consequence of a very hot summer and high pollution levels in the city.
The study, based on data available with the Central Pollution Control Board (CPCB) reveals that in April, ozone levels have almost every day been high than the proposed standard of 90 microgram/cu m for a daily maximum eight-hourly average. The standards that have been in the pipeline for a while now are awaiting notification by the Ministry of Environment and Forests.
‘‘Ozone is not emitted by any source. It is instead the result of a photochemical reaction involving NOx, hydrocarbons and other pollutants under high temperature. This year has been specially hot but pollution is also growing in the city. It is a known fact that diesel vehicles emit three times more NOx than petrol vehicles and the government needs to take steps to control the growing number of vehicles,’’ said Anumita Roychowdhury, associate director, CSE. – The Times of India