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污染特征和多指数生态风险评估的微塑料在城市河流从一个中国大城市

Hao Yang¹, Fuhong Sun², Haiqing Liao²

¹State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China; School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.

Journal of hazardous materials

|October 15, 2024

概括

微塑料污染在深河流中普遍存在,聚胺碎片是最常见的. 一种新的MultiMP方法揭示了大多数河流盆地的中度至高污染风险,突出了聚合物类型和丰度作为关键因素.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
城市生态城市生态学

背景情况:

缺乏对城市河流生态系统中微塑料 (MP) 污染风险的全面了解.
由于人口密度和工业活动高,大城市在管理PM污染方面面临着独特的挑战.
评估MP污染需要考虑不仅仅是丰富的多个特征.

研究的目的:

调查深主要河流MP的空间分布和形态特征.
为国会议员提出和应用一种新的综合风险评估方法 (MultiMP).
确定影响城市河流系统中PM污染的主要驱动因素.

主要方法:

利用激光直接红外 (LDIR) 成像用于地表水样本中的MP分析.
收集了来自深主要河流的样本,深是一个中国的大城市.
开发并应用了MultiMP方法,包括丰度,大小,形状和聚合物类型用于风险评估.

主要成果:

微塑料分布广泛且高度异质,其丰富度从38到18380颗/L不等 (平均2305颗/L).
聚胺 (PA) 碎片,尺寸为30-50微米,颗粒形状是主要的MP类型.
地理距离,盐度,水温和总都对MP的丰度和形态产生了重大影响.

结论:

深大多数河流采样地点和流域的MP污染风险水平中等至高.
多重MP风险评估表明,聚合物类型和丰度是MP环境风险的关键因素.
这些发现增强了对MP污染动态的洞察力,并为大城市河流环境的管理策略提供了信息.

关键词:

在LDIR分析中,微塑料是一种微塑料.自然环境影响自然环境影响风险评估风险评估风险评估城市河流城市河流

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