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Organic Fertilizer and Irrigation Water are the Primary Sources of Microplastics in the Facility Soil, Beijing
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Organic fertilizer and irrigation water are the primary sources of microplastics in the facility soil, Beijing
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Researchers found that organic fertilizer and irrigation water are the primary sources of microplastics in Beijing's facility agriculture soils, with microplastic abundance ranging widely across soil depths and posing potential pollution risks.
Factors affecting the distribution of microplastics in soils of China
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Analyzing over 1,000 data points from 53 Chinese studies, researchers found highly heterogeneous microplastic distribution in soils, with highest concentrations near major rivers and monsoon-influenced agricultural regions, correlated with mulching film use, temperature, and precipitation. This regional mapping of microplastic abundance provides a framework for identifying human health exposure hotspots where soil microplastics can enter crops and food chains.
The Occurrence and Characteristics of Microplastic Pollution in the Agricultural Soils of Anhui Province, in Eastern China
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Researchers measured microplastic concentrations in agricultural soils across Anhui Province, China, finding levels of 660–17,660 particles/kg dry soil, with fibers and films dominating and concentration influenced by geographic location and crop type. This widespread contamination of farmland soils raises concerns about microplastics entering food crops and eventually the human diet through vegetable and grain production.
Comparison of Microplastic Characteristics in Mulched and Greenhouse Soils of a Major Agriculture Area, Korea
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A Korean study compared microplastic abundance, size, shape, and polymer type between greenhouse and plastic-mulched agricultural soils, finding similar contamination levels in both settings with polyethylene and polypropylene fragments dominating at concentrations up to 943 particles per kilogram. The study confirms that standard agricultural plastic practices are a major domestic source of soil microplastic contamination, with implications for food crop safety and the long-term health of farmland ecosystems.
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