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Tracing the Footprint of Microplastics: Transport Mechanism, Degradation, and Remediation in Marine Environment
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Researchers synthesized current knowledge on microplastic transport, degradation, and remediation in marine environments, examining how the high surface-area-to-volume ratio of these particles enables them to bind heavy metals, antibiotics, and persistent organic pollutants — amplifying their ecological impact across ocean systems.
In the context of environmental concerns, microplastic (MPs) pollution emerges as one of the burning issues. The goal of this multifaceted analysis is to provide an up-to-date picture of MPs in the aquatic system with an emphasis on the marine environment. As of now, the growing concern of MP is due to high level fragmentation. The high surface area to volume ratio, crystallinity, and functional groups of MPs allows them to interact with a broad assortment of pollutants, including heavy metals, antibiotics, and persistent organic compounds. Understanding the origin, source, and fate of MPs in the marine environment is challenging, however, crucial for better management and regulation of MPs. Various spectroscopic and microscopic techniques can be applied to analyze MPs. This review article demonstrates the concept of MP lifecycle and footprint covering transport mechanism and pathways, possible characterization, degradation, and remediation processes. Additionally, the ecological and environmental impacts of MPs along with future directions were also highlighted. Thus, fostering global collaboration and innovative research and development can pave the path towards a healthier and cleaner earth for future generations.
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Transport Mechanism of Microplastic in the Environment
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This review described the physical and chemical mechanisms by which microplastics are transported through air, water, and soil — including atmospheric deposition, hydrological flow, bioturbation, and biofouling — that collectively explain their detection in remote environments from Arctic sea ice to mountain summits. Elucidating these transport mechanisms reveals that no geographic location or ecosystem is isolated from microplastic contamination, underscoring the inevitability of human exposure through air, water, and food globally.
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.
Microplastic Fate and Impacts in the Environment
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Microplastic pollution has been documented across virtually every ecosystem on Earth — from ocean surfaces to deep-sea floors, polar regions to tropical soils, and in organisms spanning the full breadth of the food web. This pervasive distribution confirms that microplastic exposure is now universal and that understanding long-term fate and biological impacts is one of the most pressing environmental health challenges of our time.
Microplastic Fate and Impacts in the Environment
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Microplastic pollution has been documented across virtually every ecosystem on Earth, from sea surfaces to deep sediments, polar regions to tropical rivers, and inside a wide range of organisms spanning multiple trophic levels. This comprehensive environmental presence confirms that microplastics pose systemic risks to biodiversity and human health through multiple exposure pathways.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.