Harmful chemicals like lead, arsenic, poly aromatic hydrocarbons (PAHs), organic carbon and elemental carbon, besides an alarming level of particulate matter (PM) of 2.5 and 10 aerodynamic diameter, have been detected in the industrial hub of Baddi-Barotiwala-Nalagarh (BBN) in a latest study conducted by IIT Kanpur.

These findings have been highlighted in a preliminary study on “Environment Pollution Sources and their Apportionment to Ambient Environment”, a copy of which is available with The Tribune.