22
Feb
New Delhi: According to a study conducted by the Centre of Excellence for Research on Clean Air (CERCA), Indian Institute of Technology, Delhi (IIT-Delhi), educational institutes (schools and colleges) top the list for high Particulate Matter (PM) concentration in the national capital. The CO2 levels were also recorded high in hospitals, colleges, offices as well as in restaurants due to higher occupancy and inadequate ventilation. Though schools too have higher occupancy but all the selected schools are naturally ventilated thus ensuring that the CO2 levels are within the permissible limits except one or 2 schools, as defined by ASHRAE (American…