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虫中的微生物代谢影响了微塑料在脱甲基乙应力下对土壤有机物质的干扰

Yanna Han¹, Mengru Fu¹, Yuhe Yang¹

¹State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China.

Journal of hazardous materials

|January 28, 2025

概括

微塑料 (MPs) 和制阻燃剂 (NBFRs) 共同污染土壤,改变了土壤和土壤功能. 衰老对这些影响有影响,可生物降解的聚乳酸 (PLA) MPs与聚乙烯 (PE) MPs的反应不同.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
土壤科学土壤科学

背景情况:

塑料垃圾产生微塑料 (MP) 和新型制阻燃剂 (NBFR),对陆地生态系统构成风险.
老化MP和NBFR对土壤功能的综合影响仍未得到充分研究.

研究的目的:

调查老化聚乳酸 (PLA) 和聚乙烯 (PE) MPs对被脱甲乙烯 (DBDPE) 污染的土壤-虫微观世界的影响.
了解MP和DBDPE的共同暴露如何影响地和随后的土壤功能,包括微生物群落和营养循环.

主要方法:

用老旧的PLA或PEMP和DBDPE建立了土壤-虫微观世界.
分析了土种子的细菌群落,碳/循环功能,以及溶解有机物消耗.
评估了土壤有机物和老化对MP影响的影响.

主要成果:

国会议员,特别是紫外线老化的,在体中丰富了塑料降解细菌和C/N循环功能.
同时暴露 (1% MPs,10 mg/kg DBDPE) 增加了溶解有机物消耗.
衰老显著影响了土壤的碳捕集,根据MP类型的不同影响;土壤有机物是影响菌细菌的关键因素.

结论:

不老的和老的国会议员都改变了土虫的细菌群落和土壤生态.
可生物降解的PLA MPs比PE MPs诱导更强的C/N循环反应,但衰老对PE MPs的影响更为明显.
这项研究增强了对陆地环境中老年MP和DBDPE相互作用的理解.

关键词:

年龄化微塑料.复合风险是一种复合风险.造品的微生物功能新的阻燃剂是一种新型阻燃剂.土壤的功能土壤的功能

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