Unraveling the contamination, source and health risk of per- and polyfluoroalkyl substances in PM 2.5 during winter from a southwestern city in China

Key Points

• The research aims to identify the contamination and health risks associated with PFAS in PM2.5 during winter.
• Collected 44 PM2.5 samples intermittently over three winter months
• Samples analyzed for 20 species of per- and polyfluoroalkyl substances
• Conducted analysis in an urban center in Chongqing, China
• Identified multiple species of PFAS in PM2.5 samples
• Findings indicate significant contamination levels
• Suggests potential health risks associated with PFAS exposure