Temporal Trends of Per- and Polyfluoroalkyl Substances (PFASs) in Tibetan Plateau Sediment Cores (1952–2020): Tracking Global Emission History and Industrial Transformation in PFAS Production

) and rapidly increasing levels of PFBA. The sedimentary record reveals temporal PFAS trends that closely track the historical evolution of global and regional PFAS emissions. Our findings provide crucial insights into the long-term trends of PFAS pollution in high-altitude ecosystems, contributing to global PFAS management efforts by assessing the effectiveness of regulations and the environmental impacts of industrial relocations.