Using machine learning to estimate the riverine fluxes of per- and polyfluoroalkyl substances to estuaries in 2000-2022, China.
Per- and polyfluoroalkyl substances are persistent contaminants of global concern. China released an estimated 250 t of perfluorooctanoic acid (PFOA) and its salts during 2004-2012, but riverine transport to coastal waters remains poorly quantified. We compiled 4,978 concentration records from 136 publications covering...