Sources, Fate and Effects of Microplastics in the Marine Environment: Part 2 of a Global Assessment

Research Progress of the Sources, Distribution Characteristics, and Potential Risks of Microplastics in the Global Marine Environment

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Researchers reviewed 43 studies across 13 Asian countries and found suspended airborne microplastics ranging from 0.017 to 18,880 particles/m³ outdoors and up to 8,865 particles/m³ indoors, predominantly as fibers and fragments of polyethylene, polypropylene, and PET. The pervasiveness of airborne MPs across Asia—from megacities to ocean environments—demonstrates that inhalation is a significant and underappreciated human exposure route for these persistent pollutants.

Microplastics in the Marine Environment: Sources, Distribution, Biological Effects and Socio-Economic Impacts

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Researchers reviewed the sources, distribution, biological effects, and socioeconomic impacts of microplastic pollution in marine environments, finding that rivers and estuaries are the primary land-to-ocean transport pathways. The review emphasizes that microplastics transfer adsorbed pollutants and additives through food webs to top predators, and that reducing plastic production and improving waste management are essential long-term solutions.

Occurrence, Fate, and Biodegradation of Microplastics in Marine Environments

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Researchers reviewed how microplastics — synthetic polymer fragments smaller than 5mm — spread through marine environments, persist over long periods, and undergo partial biodegradation. The widespread distribution of these particles in oceans raises ongoing concerns about their effects on marine life and the humans who eat seafood.

The fate and impacts of microplastics in marine systems

Review on Microplastic Pollution in Marine Ecosystems: Sources, Distribution, Ecological Impacts, and Future Directions

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Researchers synthesize current knowledge on microplastic pollution in marine ecosystems, documenting sources ranging from plastic waste breakdown to industrial activities, widespread distribution from ocean surface to seafloor, ingestion by marine organisms across trophic levels, and significant knowledge gaps including long-term ecological consequences and nanoplastic effects requiring standardized research methodologies.