A real-time source apportionment (RTSA) study, which will help identify the sources of air pollution, has begun for the extended urban areas of Patna, a top official said. The findings will help the authorities concerned to take suitable actions to reduce pollution, the official said.

RTSA studies help identify factors responsible for an increase in air pollution at any spot, such as vehicles, dust, biomass burning, and emissions from industries so that preventive measures can be taken accordingly.