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Updated: Aug 27, 2025
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Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
Published on: July 28, 2018
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Microplastics in urban runoff: Global occurrence and fate
Chengqian Wang1, David O'Connor2, Liuwei Wang1
1School of Environment, Tsinghua University, Beijing 100084, China.
Water Research
|September 28, 2022
Summary
Microplastic (MP) pollution in urban runoff is a growing global concern, impacting various aquatic environments. This review synthesizes current knowledge on MP occurrence, transport, and fate in urban runoff, proposing mitigation strategies.
Area of Science:
- Environmental Science
- Ecotoxicology
- Water Quality
Background:
- Public concern over microplastic (MP) pollution in urban runoff is increasing globally.
- MPs are transported from urban areas to rivers, lakes, and oceans via surface runoff.
- Understanding MP sources, abundance, and characteristics in urban runoff is challenging due to heterogeneity.
Approach:
- This study provides a critical review of global data on microplastic occurrence in urban runoff.
- It examines the transport, retention processes, and environmental sinks of MPs.
- The review also discusses relevant policies and proposes future research directions.
Key Points:
- Global concentrations of MPs in urban runoff vary widely (0-8580 particles/L).
- Dynamic processes like mobilization, aging, and fragmentation of MPs are often overlooked.
- The flux of MPs from urban runoff into aquatic ecosystems remains largely unknown.
Conclusions:
- Addressing microplastic pollution in urban runoff requires global cooperation and local action.
- Effective policies and mitigation measures are crucial for managing MP contamination.
- Further research is needed to understand MP fate and transport in urban environments.
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