Subproject on Toxicity Testing and Assessment of Typical Pollutants under the National Major Science and Technology Project: Watershed Ecological Risk Assessment and Early Warning Systems

Project Summary:
This subproject focuses on characterizing the occurrence, transport, transformation, and fate of emerging toxic pollutants (e.g., polycyclic aromatic hydrocarbons, flame retardants, pesticides, insecticides, and pharmaceuticals) in aquatic ecosystems, with a priority on reservoirs in Northeast China. To address the limitations of active sampling methods that may overestimate bioavailability, the study employs self-developed passive sampling devices to collect water and sediment samples, ensuring more accurate quantification of bioavailable organic contaminants. By analyzing source apportionment, spatial distribution, and ecological risks, the research establishes a toxicity evaluation framework to support watershed-scale risk early warning systems, providing scientific foundations for pollution control and ecological protection policies.

Principal Investigator:
Prof. Honggang Ni
Duration: January 2012 – December 2015