Long-overlooked coumarins in swimming pool water and their contributions to the formation of disinfection byproducts

Key Points

• The aim is to evaluate how coumarins in swimming pool water contribute to disinfection byproducts formation.
• Conducted non-targeted analysis of water samples from two swimming pools in Nanjing and Changzhou.
• Identified 112 coexisting compounds related to dissolved organic matter.
• Detected a total of 112 compounds that contribute to disinfection byproducts.
• Highlighted the significance of coumarins' presence in swimming pool water.