India, Dec. 27 -- New Delhi

The Delhi government is planning to restart its real-time source apportionment study, albeit with a focus on PM10 (particulate matter with a diameter of 10 microns or less) instead of PM2.5, as done earlier, two years after the IIT Kanpur's study was halted due to unsatisfactory results, officials aware of the matter said on Friday.

Officials said that with the Indian Institute of Tropical Meteorology (IITM) in Pune already calculating the estimated contribution of sources to Delhi's PM2.5 load, through its Decision Support System (DSS), the government wants to focus on PM10 for multipronged action against both types of particulate matter.

"We have analysed Central Pollution Control Board (CPCB) app data and...