This is the first “source apportionment study” on air pollution for Calcutta and Howrah, an environment department official said. The study is the first step in scientific management of air quality because it would help plan remedial action based on the nature of pollutants and their concentration, according to air quality management specialists. The draft says vehicular pollution is the largest contributor to Calcutta’s air pollution, the official said. The air quality monitoring stations in the city have shown PM2.5 as the primary pollutant across the city. “We will take necessary steps to combat air pollution.

Source: The Telegraph October 17, 2019 23:03 UTC