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微塑料在校园体育场的发生,生态风险,下水和它们对重金属的吸附行为

Xiaoran Zhang¹, Wenfei Jiao², Yinrui Wang²

¹Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, 102616, China. zhangxiaoran@bucea.edu.cn.

Environmental geochemistry and health

|February 22, 2025

概括

来自运动场的微塑料污染了雨水的下水,造成了生态风险. 这些颗粒,主要是纤维,吸附重金属,如和,增加污染问题.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
分析化学分析化学

背景情况:

运动场是微塑料污染的潜在来源.
流水中的微塑料可能会带来生态和健康风险.
了解微塑料的特性及其与污染物的相互作用至关重要.

研究的目的:

为了量化微塑料的丰富性,大小,形态和类型在运动场的下水.
使用光谱方法识别微塑料类型.
研究运动场微塑料对重金属 (Pb和Zn) 的吸附行为.

主要方法:

收集和分析来自五个运动场的雨水排放.
使用ATR-FTIR和微FTIR进行微塑料的表征.
用EPDM,SBR和老化的SBR微塑料进行了对Pb和Zn的吸附实验.
吸附异热体的分析 (Langmuir模型).
使用FTIR和XPS进行表面分析.

主要成果:

微塑料的度在24335067颗粒/L之间,纤维是最丰富的类型.
确定的微塑料包括EPDM,SBR,PE,PP,PO, rayon和尼龙.
与SBR相比,EPDM和老化SBR显示了比SBR更高的Pb和Zn吸附能力.
吸附遵循兰格穆尔模型,表明单层化学吸附.
重金属吸附改变了微塑料的表面特性,增加了极性.

结论:

运动场的排水是微塑料污染的重要来源.
微塑料可以吸附和运输重金属,加剧综合污染.
与微塑料污染物复合物相关的生态风险需要进一步关注.

关键词:

吸附方式吸附方式吸附方式运动场的运动场.这是一种重金属,重金属.微塑料是一种微塑料.

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