Air pollution levels creep up in Delhi
1 year, 1 month ago

Air pollution levels creep up in Delhi

The Hindu  

Air quality in Delhi and its suburbs deteriorated again overnight after a marginal improvement a day ago with forecasts suggesting that a major relief is unlikely in the coming days. The Centre on Saturday removed stringent curbs, including a ban on construction work related to linear projects and the entry of polluting trucks into Delhi in view of a dip in air pollution levels due to favourable wind speed and direction. These measures constitute the final stage -- Stage IV -- of the Centre's air pollution control plan called the Graded Response Action Plan. The Commission for Air Quality Management in National Capital Region and Adjoining Area, a statutory body responsible for formulating strategies to combat pollution in the region, asked Delhi and NCR states to revoke all emergency measures, under which only CNG, electric and BS VI-compliant vehicles from other states are allowed to enter Delhi, with exemptions granted to those involved in essential services. Secondary inorganic aerosols -- particles such as sulfate and nitrate that are formed in the atmosphere due to the interaction of gases and particulate pollutants from sources like power plants, refineries and vehicles -- are the second major contributor to Delhi's foul air, accounting for 30 to 36 per cent of the air pollution in the city over the last few days.

History of this topic

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55 minutes ago
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