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Soil Pollution by Micro- and Nanoplastics: An Overview
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"This overview synthesized evidence showing that annual plastic releases to terrestrial environments are 4 to 23 times higher than releases to the ocean, with microplastics entering soil via sewage sludge, compost, plastic mulch, and irrigation. Soil contamination at this scale threatens agricultural food safety and groundwater quality, creating direct pathways for microplastics and associated toxins to enter the human diet through crops and drinking water."
Annual releases of plastic to the terrestrial environment are 4 to 23 times as high as releases to the marine environment. Microplastics can enter the soil by many routes, for example, compost and sewage sludge as fertilizer, plastic mulching, irrigation and...
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Soil Pollution by Micro- and Nanoplastics: Sources, Fate, and Impact
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Researchers examine how micro- and nanoplastics enter soil systems, persist through environmental processes, and threaten soil fertility and ecosystem health, with direct implications for agricultural productivity, food security, and human health.
Micro and Nanoplastics: Contamination of Soil
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Researchers reviewed how micro- and nanoplastics accumulate in soil through agricultural mulch films, sewage irrigation, and landfill leaching, disrupting soil ecosystems and potentially entering the food chain. Because these particles are so small, they can travel into groundwater and be absorbed by crops, raising concerns about human dietary exposure.
Persistence of Micro- and Nanoplastics in Soil
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This review examined the persistence, fate, and properties of micro- and nanoplastics in soil environments, highlighting significant knowledge gaps in understanding how these particles behave once deposited in terrestrial systems. Because soils represent a major and understudied reservoir for plastic particles, clarifying their persistence and mobility is critical for assessing long-term contamination of crops and groundwater that feed into human exposure.
Micro and Nanoplastics in Agricultural Soils: Challenges and Future Directions
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This review examined the sources, behavior, and ecological effects of micro- and nanoplastics in agricultural soils, highlighting challenges in detection, risk assessment, and regulatory management as plastic use in farming continues to grow. Nanoplastics in particular present heightened concern because their tiny size enables deeper soil penetration, plant uptake into edible tissues, and greater biological reactivity than larger fragments.
Long-Term Fate of Micro/Nanoplastics in Soil Systems and Their Impacts
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Researchers examined the long-term fate of micro- and nanoplastics in soil, finding that these persistent particles accumulate over time and can disrupt soil ecosystems, potentially affecting plant growth, soil organisms, and the broader food chain through sustained environmental exposure.
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