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Updated: Jul 14, 2026
10:49
Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading
Published on: March 6, 2014
Surface sediments as a sink and risk source for legacy POPs during waste management practices
1Department of Environmental Engineering, Faculty of Engineering, Izmir Institute of Technology, Izmir, Türkiye.
Environmental Pollution (Barking, Essex : 1987)
|March 28, 2025
Summary
Shipbreaking activities contaminate marine sediments with persistent organic pollutants (POPs) like PCBs and PBDEs. Urgent waste management improvements are needed to protect marine ecosystems from these legacy contaminants.
Area of Science:
- Environmental Chemistry
- Marine Pollution
- Ecotoxicology
Background:
- Persistent organic pollutants (POPs), including polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs), pose global environmental risks.
- Improper waste management, especially shipbreaking, contributes to ongoing POP release into marine ecosystems.
Purpose of the Study:
- To investigate PCB and PBDE contamination levels in marine sediments near a major shipbreaking yard in Aliağa, Türkiye.
- To identify sources of POP contamination and assess ecological risks to benthic environments.
Main Methods:
- Analysis of 46 PCB and 23 PBDE congeners in 16 surface sediment samples.
- Source apportionment using principal component analysis (PCA).
- Ecological risk assessment based on sediment quality guidelines.
Main Results:
- High concentrations of PCBs and PBDEs were found in sediments, with shipbreaking sites showing the highest levels.
- PCA indicated distinct sources: shipbreaking for highly chlorinated PCBs, and industrial/urban runoff for less chlorinated PCBs and PBDEs.
- Most samples exceeded sediment quality guidelines, with PCBs 28 and 52 posing moderate to high risks to benthic organisms.
Conclusions:
- Shipbreaking yards are significant hotspots for legacy POP contamination, requiring improved waste management and international regulatory enforcement.
- Effective remediation strategies are crucial to mitigate ecological risks in contaminated marine environments.
- Addressing POPs from shipbreaking is vital for protecting marine biodiversity and ecosystem health.
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