粗微塑料在农业土壤中的积累模式在20多年不同城市堆肥应用的过程中
Gabin Colombini1, Fatima Senouci1, Cornelia Rumpel1
1IRD, INRAE, CNRS, UMR Institute for Ecology and Environmental Sciences of Paris (iEES-Paris), 75005, Paris, France.
Environmental pollution (Barking, Essex : 1987)
|October 7, 2024
概括
城市堆肥修正案随着时间的推移增加了农业土壤中的粗微塑料 (CMP). 这项为期21年的研究发现,CMP积累因堆肥类型而异,数量与估计一致,但质量不同.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 聚合物科学 聚合物科学
背景情况:
- 塑料污染是全球环境和健康问题.
- 微塑料广泛存在,包括在用城市堆肥修改的农业土壤中.
- 了解土壤中的微塑料积累模式至关重要.
研究的目的:
- 为了研究粗微塑料 (CMP) 在农业土壤中的积累模式.
- 分析不同城市废物复合物的长期应用导致的CMP积累.
主要方法:
- 在21年内,对三种堆肥类型 (城市固体废物,生物废物,污水污泥/绿色废物混合物) 进行实地实验.
- 使用密度分化和氧化对CMP进行隔离.
- 通过热解气体染色学/质谱法 (Py-GC/MS) 来识别聚合物.
主要成果:
- 不同的堆肥类型导致CMP在土壤中的积累水平不同.
- 在21年的研究期间,土壤中CMP含量显著增加.
- 21年后的CMP数量与估计相匹配,但质量没有;形态型进化在薄膜和片段之间没有显著差异.
结论:
- 长期的城市堆肥应用导致农业土壤中粗微塑料积累的增加.
- 估计和测量CMP质量之间的差异表明复杂的积累动态.
- 生物或非生物过程可能会影响土壤生态系统中的CMP进化.
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