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Microplastic detection in soil amended with municipal solid waste composts as revealed by microscopy and pyrolysis/GC/MS
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This conference paper presented methods for detecting microplastics in agricultural soils amended with municipal solid waste composts, using both microscopy and pyrolysis-GC/MS analysis. Compost-applied microplastics represent a significant but often overlooked pathway for plastic contamination of agricultural soils and food crops.
Microplastic detection in soil amended with municipal solid waste composts as revealed by microscopy and pyrolysis/GC/MS. 17ème International Ramiran Conference
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Microplastic Detection in Soil Amended With Municipal Solid Waste Composts as Revealed by Transmission Electronic Microscopy and Pyrolysis/GC/MS
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Researchers developed a method combining soil fractionation, transmission electron microscopy, and pyrolysis-gas chromatography to detect microplastics in agricultural soils amended with municipal solid waste compost. They successfully identified plastic fragments even in fine soil fractions below 200 micrometers by using titanium and barium as chemical tracers from the original polymer production. The study demonstrates that microplastics from compost persist in soil across multiple size fractions after years of repeated application.
Microplastics in compost from municipal solid waste. Assessment of their presence in the products generated with different industrial strategies.
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Microplastics were detected in compost made from municipal solid waste processed using different industrial strategies, raising concerns about the use of compost as a soil amendment. The presence of microplastics in compost could transfer plastic contamination directly to agricultural soils when compost is applied as fertilizer. The findings suggest that composting facilities need better plastic removal processes to prevent microplastic spread through the circular economy.
Microplastic pollution in long-term urban compost amended soils
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This study examined microplastic pollution in soils that had received long-term amendments of urban compost, finding significant plastic contamination from compost application. The results highlight that composting can be a pathway for microplastics to enter agricultural soils.
Plastic contamination of soil: is compost the source?
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Researchers assessed compost as a source of plastic contamination in agricultural soils, finding detectable levels of microplastics in commercial composts that are subsequently applied to farmland. This study identifies composting of plastic-contaminated organic waste as an underappreciated pathway for microplastic introduction into agroecosystems.
Detection of microplastics in compost samples using a thermal decomposition method
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A thermal decomposition method was evaluated for detecting and quantifying microplastics in compost samples, addressing the challenge of finding plastic particles in complex organic matrices. The approach enables identification of microplastic polymer types in compost through their characteristic thermal degradation signatures, supporting monitoring of plastic contamination in agricultural soils.
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