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Regional source apportionment of PM2.5 in South India
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DOI：10.1016/j.atmosenv.2026.122201.png)
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Abstract
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• First, year-long PM2.5 regional source apportionment study in South India. • Frequent exceedance of WHO PM2.5 guidelines indicating sustained exposure. • Chemical speciation, receptor modelling and mass-meteorology analysis identified biomass burning and urban dust as dominant sources. • Nearest-neighbour analysis using GIS data, government, and field-based data strengthen the source apportionment study. • Seasonal shifts strongly influenced emission source distribution.
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