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Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
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Microplastics in Asian rivers: Geographical distribution, most detected types, and inconsistency in methodologies
Hsin-Tien Lin1, Falk Schneider1, Muhamad Afiq Aziz2
1National Cheng Kung University, Department of Environmental Engineering, No.1 University Road, Tainan City 701, Taiwan.
Environmental Pollution (Barking, Essex : 1987)
|April 15, 2024
Summary
Microplastic pollution is a growing concern in Asian rivers. This review maps pollution hotspots and identifies research trends, highlighting the need for standardized methods to address this environmental threat.
Area of Science:
- Environmental Science
- Ecotoxicology
- Water Quality Research
Background:
- Microplastics present a significant environmental risk, impacting aquatic ecosystems and potentially contaminating the human food chain.
- Asia's rivers are globally recognized as highly polluted with plastics due to rapid development and insufficient waste management.
- Research on microplastics in Asian freshwater systems is emerging, despite the region's high pollution levels.
Purpose of the Study:
- To systematically review existing literature on microplastics in Asian freshwater systems.
- To identify and map microplastic pollution hotspots across the continent.
- To synthesize current research trends, challenges, and future prospects in this field.
Main Methods:
- Conducted a systematic review of 228 scholarly articles.
- Analyzed research distribution, focusing on geographical concentration and water body types.
- Identified prevalent microplastic types and common sampling methodologies.
Main Results:
- Research is concentrated in China and Japan, with a focus on riverine and surface waters.
- Polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET) are the most common microplastic types, often found as fibers or fragments.
- Significant variation in sampling and reporting methods hinders comprehensive data synthesis.
Conclusions:
- The study delineates microplastic hotspots in Asian freshwater environments.
- Identified challenges include methodological diversity and the need for standardized analytical frameworks.
- Outlined prospects for future research to improve understanding and mitigation strategies for microplastic pollution.
