PFAS History, Threat to Health, and Pathways to Ingestion
On April 6, 1938, Roy J. Plunkett was a 27-year-old research chemist who worked on freon refrigerants at DuPont’s laboratory in Deepwater, New Jersey. Plunket had produced tetrafluoroethylene gas (TFE) and stored it overnight in small cylinders at dry-ice temperatures before chlorinating it. When he and an assistant prepared a cylinder for use, none of
