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城市地表水流对海洋环境的 PFAS 贡献比处理废水更多

Phoebe Lewis¹, Erica Odell², Christopher P Johnstone¹

¹Environment Protection Authority Victoria, EPA Science, Victoria, Australia.

Environmental research

|September 5, 2025

概括

这项研究追踪了52种和多基物质 (PFAS) 在养费利普港湾的河流中. 发现地表水流是PFAS污染的重要来源,影响海洋生态系统和社区健康.

科学领域:

环境化学
生态毒理学
监测水质

背景情况:

和多基物质 (PFAS) 是持续存在的环境污染物,在全球范围内越来越多的研究.
了解PFAS大规模运输途径,特别是来自分散来源的途径,对于有效的环境管理至关重要.
菲利普港湾是一个重要的澳大利亚海洋生态系统,

研究的目的:

在供应菲利普港湾的河流和小溪中调查52种PFAS的存在情况和特征.
确定不同土地使用和降雨对地表水的PFAS分布的影响.
量化PFAS出口到菲利普港湾,并比较地表水流与废水排放的贡献.

主要方法:

收集了76个抽取水样,并在两个月内在七个不同的地点部署了28个极地有机化学整合样本 (POCIS).
用先进的分析技术分析了52种目标PFAS化合物的样本.
开发了表面水流模型,将土地使用模式与观察到的PFAS度和出口估计相关联.

主要成果:

在取样本中检测到25个PFAS,在POCIS中检测到26个PFAS,表面水中的平均总PFAS (52PFAS) 为76.4 ng/L.
确定了包括 perfluorooctanesulfonic acid (PFOS) 和其前体在内的特定PFAS作为主要污染物.
模拟的地表水流出口到菲利普港湾的估计57.4公斤/年,超过了19公斤的废水贡献.

结论:

不同的土地使用方式显著影响流域的PFAS概况,超出了传统的点源.
地表水流是PFAS运输到菲利普港湾的主要途径,需要综合管理策略.
监测广泛的PFAS,以及土地使用和水文数据,对于减轻扩散污染和保护生态系统和公共健康至关重要.

关键词:

其他收获区扩散的来源环境监测土地使用随机森林城市排水

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