Vehicles make their way through the morning smog at New Delhi. Pic/PTI

The Delhi government will conduct a round-the-year air quality study to ascertain sources of pollution in the city, Chief Minister Arvind Kejriwal said today. He said sources of pollution are different according to the area and time. The AAP dispensation has a plan to procure machines which can detect sources of pollution at any given time and the government would act accordingly, Kejriwal told a gathering on the third anniversary of the Delhi government here.