[Microplastics pollution in the Yellow River basin: current status and control strategy]

Area of Science:

• Environmental Science
• Ecotoxicology
• Water Quality Assessment

Context:

• Microplastic pollution data for the Yellow River basin is limited compared to marine and other major freshwater systems.
• The Yellow River basin faces increasing environmental pressures, impacting its unique ecosystems and water resources.

Purpose:

• To comprehensively review and characterize microplastic pollution in the Yellow River basin's sediments and surface waters.
• To assess microplastic abundance, types, and spatial distribution, including in key urban and wetland areas.
• To propose targeted prevention and control measures for microplastic contamination in this vital river system.

Summary:

• Microplastic pollution in the Yellow River basin sediments and surface waters exhibits a clear upstream-to-downstream gradient, intensifying in the Yellow River Delta wetland.
• Significant differences in microplastic types were observed between sediment and surface water, linked to material properties.
• Pollution levels in key Yellow River basin cities and wetlands are moderate to high, demanding urgent attention.

Impact:

• Microplastic contamination poses risks to aquaculture and human health in Yellow River riparian zones.
• Effective control necessitates enhanced production standards, robust legislation, and advancements in biodegradable plastics and waste degradation technologies.