Identifying the nonpoint source of perfluorinated compounds using a geographic information system based approach
Yasuyuki Zushi1, Shigeki Masunaga
1Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Japan. d07tf011@ynu.ac.jp
Environmental Toxicology and Chemistry
|January 23, 2009
Summary
Train stations and commercial/transportation areas are key indicators of perfluorinated compound (PFC) nonpoint pollution in rivers. Identifying these sources helps manage PFC contamination in urban waterways.
Area of Science:
- Environmental Chemistry
- Water Quality Monitoring
- Urban Hydrology
Background:
- Perfluorinated compounds (PFCs) are widespread environmental contaminants.
- Nonpoint sources of PFCs remain largely unidentified, hindering effective management.
- Previous studies detected PFCs in various environmental compartments.
Purpose of the Study:
- To characterize the nonpoint sources of PFCs in the Hayabuchi River, Japan.
- To estimate annual PFC loads from nonpoint sources across Japan.
- To identify land use indicators associated with PFC pollution.
Main Methods:
- Geographic Information System (GIS) analysis.
- Statistical analysis of water quality data.
- Estimation of annual PFC loads.
Main Results:
- Nonpoint PFC loads in Japan are comparable to those from sewage treatment plants (STPs).
- PFC pollution in river water correlates with commercial and transportation land use.
- Watersheds with train stations showed higher PFC discharge, indicating their role as nonpoint sources.
Conclusions:
- Train stations can serve as effective indicators for identifying PFC nonpoint pollution hotspots.
- Commercial and transportation land uses are significant contributors to urban river PFC contamination.
- Understanding these sources is crucial for developing targeted mitigation strategies for PFCs.
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