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河口微塑料的水环境容量按物种限制敏感度值

Yichuan Zeng¹, Hua Wang¹, Dongfang Liang²

¹Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China.

Journal of hazardous materials

|May 20, 2025

概括

河口积累了微塑料 (MP),在没有明确的排放限制的情况下,构成生态风险. 本研究建立了一个框架来量化河口MP承载能力,帮助风险管理和塑料排放分配.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
海洋生物学海洋生物学

背景情况:

河口是对微塑料 (MP) 污染脆弱的重要生态系统.
现有的风险管理缺乏针对这些敏感环境的MP排放具体限制.

研究的目的:

为 MPs 在河口量化水环境能力 (WEC).
为风险评估建立基于物种健康的微塑料度 (MPC) 门.
为河口生态系统开发一个动态的WEC框架.

主要方法:

使用概率密度函数和形状因子模拟的MP分布.
使用5%的物种危害度 (HC5) 来确定MPC值,并根据环境MP特征进行校正.
集成的MP模拟与MPC值建立一个动态的WEC框架.

主要成果:

在长江河口的潮间和最大度区域确定了MP聚合热点.
在热点中量化重新缩放的MPC,达到4.77 × 10^5颗粒/d·m3,占WEC安全门的14.38%.
证明了动态WEC框架在评估河口MP承载能力方面的有效性.

结论:

这项研究为量化河口MP承载能力提供了科学依据.
开发的框架支持用于有效环境管理的塑料排放权的分配.
这项研究解决了MP排放限制标准在河口风险管理中的关键需求.

关键词:

机密模拟的机密模拟河口连续性的河口连续性危险的度危险的度微塑料是一种微塑料.水环境能力水环境能力

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