Toxicology Pollutants Persistent Chemicals Persistent Organic Pollutants Water Chemistry Carbon Capture Synthetic Chemicals Water Quality Dyes and Stains Water Contamination Photocatalysis PFAS Compounds Oil Chemistry Hazardous Chemicals Perfluoroalkyl Substances Pollution Detection Air Pollution Waste Analysis Organic Compounds Water Pollution Persistent Pollutants Water Analysis Water Treatment Chemical Safety Study of PFAS Toxic Substances Waste Management Food Chemistry Disinfectants