One route for PFOS and PFOS-related substances to the environment may be through sewage treatment plants (STPs) and landfills, where elevated concentrations have been observed compared to background concentrations.
全氟辛烷磺酸和与全氟辛烷磺酸有关的物质可以通过污水处理厂和通过废渣填埋排放到环境中，其浓度与背景浓度相比会更高。