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微塑料对河流悬浮沉积物吸附醇的影响

Shiqi Tao^1,2,3, Simin Feng^1,2,3, Yuyun Chen^4,5,6

¹School of Water and Environment, Chang'an University, Middle South Second Ring Road Xi'an, 710061, Xi'an, China.

Environmental management

|April 24, 2025

概括

微塑料 (MPs) 显著改变了河流沉积物对醇 (CP) 的吸附. 根据PC类型和环境因素,PVC增强了吸附,而PS和PE阻碍了吸附.

科学领域:

环境化学环境化学
环境科学环境科学
水的质量水的质量

背景情况:

微塑料 (MP) 是新兴的污染物,它们在污染物运输中的作用越来越令人担忧.
在水生环境中,MP,沉积物和有机污染物,如类 (CPs) 之间的相互作用尚不清楚.
河流悬浮沉积物 (SS) 对污染物的命运和运输至关重要.

研究的目的:

调查普通MPs (PVC,PS,PE) 对黄河SS的CP (MCP,2,4-DCP,2,4,6-TCP) 吸附的影响.
阐明影响MP-CP-SS相互作用的机制和环境因素.
为环境风险评估提供结合MP和CP污染的洞察力.

主要方法:

在不同MP (PVC,PS,PE) 的存在下,系统地研究CP对SS的吸附.
吸附等温模型 (Langmuir, Freundlich) 用于量化吸附行为.
对环境因素的分析,包括离子强度,湿酸和pH值.

主要成果:

聚乙烯显著促进了CP吸附 (对2,4,6-TCP高达65%),符合兰迈尔模型.
由于PS和PE的分离系数低于SS,PS和PE阻碍了2,4-DCP的吸附,与弗洛伊德利希模型相一致,由于PS和PE的分离系数低于SS.
吸附受离子强度,湿酸和pH值的影响,而酸性条件有利于吸附.

结论:

MPs改变SS表面特性和聚合,影响CP吸附动态.
MPs对CP吸附的作用是特定于物种的,并取决于环境条件.
了解这些复杂的相互作用对于评估受污染的河流系统中的生态风险至关重要.

关键词:

吸附吸附是一种吸附.类醇是一种类醇.微塑料微塑料的使用河流河流河流河流悬浮沉积物的悬浮沉积物

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