Heavy metals present in air of Delhi and 9 other Indian cities, CPCB tells tribunal | Delhi News
New Delhi: Central Pollution Control Board (CPCB) has informed National Green Tribunal (NGT) that it has found heavy metals, such as copper, zinc, chromium and molybdenum, ranging between 0.1% and 2.1% of the total PM10 concentration across 10 Indian cities, including Delhi. The other nine are Jaipur, Bhopal, Lucknow, Ahmedabad, Nagpur, Kolkata, Bengaluru, Visakhapatnam and…