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植物-生物固体-土壤系统中的PFAS:分布,分成和对土壤微生物群落的影响

Madhav Kharel¹, Maoqing Tian², Trang Vu²

¹Department of Environmental & Sustainable Engineering, University at Albany, State University of New York, Albany, NY 12222, United States.

Journal of hazardous materials

|September 8, 2025

概括

这项研究揭示了基和多基物质 (PFAS) 在具有生物固体的土壤中如何移动. 植物生长和生物固体类型显著影响PFAS分布和土壤微生物群落,影响环境安全.

科学领域:

环境科学环境科学
土壤科学土壤科学
环境化学环境化学

背景情况:

和多基基物质 (PFAS) 是持久的环境污染物.
对土壤的生物固体应用是 PFAS 进入陆地生态系统的潜在途径.
了解用生物固体修改的植被土壤中的PFAS行为对于风险评估至关重要.

研究的目的:

研究六种受监管的PFAS化合物的行为和分布,这些化合物在被A类和B类生物固体修改的植被土壤中.
评估植物种植和生物固体类型对PFAS流动性和土壤微生物多样性的影响.
确定影响PFAS积累和植物吸收的因素.

主要方法:

用A类和B类生物固体修改的土壤柱中的六种受监管的PFAS化合物的分析.
顺序提取以确定PFAS分成不同的土壤分量 (可在水中溶解,可在甲醇中提取,可在中水解).
对土壤微生物多样性的评估,以应对生物固体变化和PFAS暴露.

主要成果:

短链PFAS分布均;长链PFAS积聚在较低的土壤层中.
植物栽培影响了PFAS的再分配,可能降低了长链化合物的流动性.
在性水解分数中积累的 perfluorobutane sulfonate (PFBS) 与植物吸收量的增加有关.
生物固体类别和PFAS暴露显著改变了土壤微生物多样性和分层.

结论:

植物-生物固体-土壤系统中的PFAS行为是复杂的,受到多种因素的影响.
植物吸收和微生物社区的转移是对PFAS污染的重要反应.
缓解策略应考虑监管PFAS及其前体,以实现有效的环境管理.

关键词:

生物固体是一种生物固体.分割法分割法分割法分割法.在PFAS中,有很多方法.植物吸收的时间土壤的微生物组.

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