Kunming Yunnan China
Kunming
China
Kunming University of Science and Technology
PM2.5, Fireworks, PMF, Formation mechanisms, Spring festival
Water-soluble ions, Source analysis, Seasonality, Biomass burning, Southwest border cities
Atmospheric particulate matter, Yunnan plateau, Vehicle exhaust, Composition characteristic spectra, Health risk assessment
PAHs, Non-ferrous smelting industry, Biomass Burning, PMF, Health risk