Persistent organic pollutants (POPs) are globally concerned pollutants due to their widespread occurrence, long-term persistence, strong resistance, long-range transportation, high bioaccumulation, and potentially significant impacts on human health and ecosystems.
Some legacy POPs, such as hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethane (DDT), and polychlorinated biphenyls (PCBs), are still frequently detectable in the environment, although they have been banned or restricted for decades.
For some emerging POPs, such as Polybrominated Diphenyl Ethers (PBDEs), Perfluorooctane Sulfonate (PFOS), and Polycyclic Aromatic Hydrocarbons (PAHs), their concentrations in the environment would be increased with social and economic development.
Freshwater ecosystems play a pivotal role in supplying drinking water, fisheries, and recreation and in maintaining regional ecological balance and sustainable socioeconomic development, but the world’s freshwater ecosystems are generally suffering from POPs pollution.
Therefore, it is very meaningful to understand the environmental behaviors, processes, effects, and risks of POPs in freshwater ecosystems.
This special issue would provide a window to show some study efforts in such fields.