Does wet precipitation represent local and regional atmospheric transportation by perfluorinated alkyl substances?

► Reporting of perfluorochemicals in rain in terms of flux is more relevant than concentration. ► Fluxes of perfluorochemicals in rain from inland areas are similar to those in the open oceans. ► Snow deposited on ground for 4 days had different perfluorochemical profiles from freshly deposited snow. ► Snow cores do not preserve the chronology of perfluorochemical deposition.