Microplastics regulate soil microbial activities: Evidence from catalase, dehydrogenase, and fluorescein diacetate hydrolase

Environmental Research, Journal Year: 2024, Volume and Issue: 263, P. 120064 - 120064

Published: Sept. 25, 2024

Language: Английский

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The microplastics distribution characteristics and their impact on soil physicochemical properties and bacterial communities in food legumes farmland in northern China

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 471, P. 134282 - 134282

Published: April 17, 2024

Language: Английский

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Physiological and transcriptomic responses of seawater halobios to micro/nano-scale polystyrene-cadmium exposure in a marine food web

Environmental Pollution, Journal Year: 2024, Volume and Issue: 348, P. 123843 - 123843

Published: March 27, 2024

Language: Английский

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微塑料在土壤中赋存特征、吸附和迁移机制

Scientia Sinica Chimica, Journal Year: 2024, Volume and Issue: 54(12), P. 2463 - 2479

Published: June 25, 2024

塑料污染已成为备受关注的全球环境问题,土壤是塑料的主要汇集地之一,进入到土壤中的塑料会经过物理、化学和生物老化过程降解为微塑料。由于微塑料具有粒径小、难降解等特点,容易吸附土壤环境中共存污染物,如有机污染物和重金属等,进而发生共迁移。本文总结了微塑料在全球不同地区土壤中的赋存特征,并探讨了土壤中微塑料的可能来源(农业地膜、工业活动、污水污泥等);归纳了土壤中微塑料对共存有机污染物和重金属的吸附机制以及影响因素(微塑料的理化性质和环境条件),微塑料吸附有机污染物和重金属的机制均包括孔隙填充作用、范德华力、静电力和阳离子-π键;除此之外,微塑料吸附有机污染物的机制还包括疏水作用、分配作用、氢键、π-π键、卤素键、负电荷辅助氢键和CH/π键;而络合(螯合)作用和离子交换在微塑料吸附重金属过程中起到了重要作用。综述了微塑料在土壤中的迁移机制(物理截留、静电力、疏水作用、氢键和络合作用等)以及影响因素;并进一步讨论了微塑料吸附和迁移行为对土壤理化性质及其生态毒性的影响。最后,对土壤中微塑料环境行为研究进行了展望。本文对于客观评价微塑料在土壤中的归趋和生态风险具有重要意义。

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Effects of the coexistence of polystyrene microplastics and imidacloprid on nitrogen and phosphorus transformation in soil

Frontiers of Environmental Science & Engineering, Journal Year: 2024, Volume and Issue: 19(2)

Published: Nov. 23, 2024

Language: Английский

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