微塑料衍生的光溶解有机物质的破译在城市湖泊,运河和河流中使用并行因子分析建模和模仿实验
Md Anamul Hassan1, Mashura Shammi1, Shafi M Tareq1
1Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka, Bangladesh.
概括
微塑料将光溶解有机物 (fDOM) 释放到水生环境中. 这项研究将fDOM特征与微塑料存在联系起来,突出了它们对城市水质的影响.
科学领域:
- 环境化学环境化学
- 有机地化学 有机地化学
- 分析水质 分析水质
背景情况:
- 微塑料是普遍存在的环境污染物.
- 光溶解有机物 (fDOM) 在水生生态系统中起着至关重要的作用.
- 微塑料和fDOM之间的相互作用需要进一步研究.
研究的目的:
- 为了研究从微塑料中光溶解有机物 (fDOM) 的浸出.
- 确定水生环境中的fDOM和微塑料之间的联系.
- 了解微塑料对城市地表水中的fDOM特征的影响.
主要方法:
- 三维激发发射矩阵 (3DEEM) 谱学用于识别光体.
- 平行因子分析 (PARAFAC) 建模用于识别fDOM组件.
- 在受控水生环境中模仿合成塑料 (扩展聚钢,低密度聚乙烯) 的实验.
主要成果:
- 在城市地表水中发现了五种光体 (峰值为A,M,T,Tuv,Wuv) 和五种成分 (酸类,p-酸类,酸类,洗剂类,酸类).
- 扩展聚乙烯 (EPS) 释放的fDOM具有两个明显的光峰.
- 低密度聚乙烯 (LDPE) 释放了fDOM,其中有一个明显的光峰.
- 光剂和成分强度显示出与水生环境中的微塑料有显著的关联.
结论:
- 微塑料是水生环境中fDOM的来源.
- 城市地表水中fDOM的存在和特征受到微塑料的显著影响.
- 这项研究强调了在评估水质和fDOM动态时考虑微塑料污染的重要性.
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