Scientists identify paths for reducing air pollution across South Asia

Study finds that solid biofuel is leading combustible fuel contributing to PM2.5-attributable mortality

"Air pollution, both indoors and outdoors, is the leading risk factor for death in South Asia"

Researchers have evaluated the contribution of various emission sectors and fuels to small particulate matter (PM2.5) for 29 states in India and six surrounding countries, identifying potential pathways to reduce air pollution and improve population health across South Asia.

The results, published recently in the journal Environmental Science & Technology, identify primary organics organic particles emitted directly into the atmosphere from various sources as the main drivers of high concentrations of PM2.5 in these countries. PM2.5 are fine inhalable pollution particles, with diameters that are generally 2.5 micrometers and smaller.

“Countries in South Asia have substantial emissions and associated air pollution and mortality burden,” said study first author Deepangsu Chatterjee, a doctoral student at Washington University in St. Louis, US.