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Sources, Uses and Transport of Secondary Microplastics from Land to Marine Environment
Summary
Researchers traced how secondary microplastics originate from land-based sources — including tire wear, synthetic textiles, and agricultural film degradation — and travel via runoff, rivers, wind, and wastewater effluent to reach marine environments. Mapping these land-to-sea pathways identifies the critical interception points where pollution controls could most effectively reduce the estimated 8 million metric tons of plastic entering oceans each year.
The widespread distribution of microplastics has resulted in a pervasive environmental pollution issue with global implications impacting diverse ecosystems, including terrestrial, aquatic, and atmospheric environments. The role of the small-scale plastic material in...