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微塑料在明江河下游的分布,来源和生态风险评估

Liqin Bao¹, Jiayi Hao¹, Wenbin Pan¹

¹College of Environment & Safety Engineering, Fuzhou University, Fuzhou 350116, China.

|December 24, 2025

概括

明江河的微塑料污染程度适度,在干旱季节和沉积物中发现的度更高. 城市废水引发污染,造成PVC和PAN等有毒聚合物的生态风险增加.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
河流生态系统河流生态系统

背景情况:

微塑料是一种普遍存在的全球污染物,威胁到淡水生态系统.
了解微塑料污染对于评估生态风险至关重要.

研究的目的:

描述明江河下游的微塑料丰富度,形态和聚合物组成.
通过PLI,PHI和PERI等指数识别污染源并量化生态风险.

主要方法:

微观观察和拉曼光谱用于微塑料分析.
整合社会经济和水质数据以确定污染源.
污染负载指数 (PLI),聚合物化学毒性危险指数 (PHI) 和潜在生态风险指数 (PERI) 的应用.

主要成果:

在明江河中适度的微塑料污染,干旱季的表面水和沉积物负载较高.
透明纤维/碎片微塑料 (<500微米) 主要占主导地位,主要由聚烯 (PP) 和聚乙烯 (PE) 组成.
城市化驱动的废水排放被确定为主要的污染源; PHI 和 PERI 表示的生态风险增加.

结论:

下游的明江河呈现中度的微塑料污染,但生态风险较高,特别是来自有毒聚合物.
沉积物充当了微塑料的重要沉积物,在水和沉积物之间有明显的污染梯度.
针对城市废水的有效管理策略对于减轻微塑料污染和生态危害至关重要.

关键词:

分布的特点分布的特点.生态风险生态风险下部的明江河河流.微塑料微塑料的使用这些来源来源来源来源来源.

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