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当前的水质指南可能无法保护野生动物免受淡水生态系统中PFOS生物积累的影响

Suzanne Vardy¹, Brenda Baddiley¹, Christoph Braun¹

¹Water Ecosystem Sciences, Science Division, Department of Environment, Tourism, Science and Innovation, Queensland Government.

Integrated environmental assessment and management

|August 13, 2025

概括

现有的水质指南对甲硫酸盐 (PFOS) 可能无法充分保护野生动物. 即使低于指导水平,水中的PFOS也导致了水生生物群的高度,超过了野生动物饮食指导方针 (WDGs).

科学领域:

环境毒理学环境毒理学
生态毒理学生态毒理学
野生动物风险评估野生动物风险评估

背景情况:

perfluorooctane sulfonate (PFOS) 在水生生态系统中生物积累,对高热带水平的呼吸空气的野生动物构成风险.
当前的水质指南往往不考虑生物积累,可能低估了对野生动物的风险.
非常需要评估现有的PFOS指南对保护野生动物的有效性.

研究的目的:

评估澳大利亚PFOS水质指南在保护野生动物方面的充分性.
调查水,沉积物和生物中的PFOS度之间的关系.
建议改善野生动物风险评估的查门.

主要方法:

在澳大利亚昆士兰州东南部的八个地点 (2022-2023) 收集了一年多的水,沉积物和生物样本.
分析了PFOS和其他per-和polyfluoroalkyl物质 (PFAS) 的样本,重点关注PFOS在生物中的积累.
计算了生物积累因子 (BAFs),并将生物度与澳大利亚默认指导值 (DGVs) 和野生动物饮食指南 (WDGs) 进行了比较.

主要成果:

在生物群中,PFOS是占主导地位的PFAS;其他长链完全碳酸 (PFCAs) 也被检测到.
50%的地点的平均PFOS地表水度低于澳大利亚DGV.
除了一个站点外,所有站点都超过了生物群中PFOS的NEMP WDGs,尽管水度很低.
鱼类中的生物积累因子 (BAFs) 与PFOS水度和高可变性呈反向关系.

结论:

目前的澳大利亚PFOS水质指南,包括DGV和WDG,可能无法充分保护野生动物免受生物积累.
BAF 的高度变化和与水度的反向关系突显了现有评估方法的局限性.
为了更有效地评估PFOS的野生动物风险,提出了一个临时的,现场衍生的查值.

关键词:

在PFOS系统中,我们可以生物积累的生物积累生物群生物群生物群淡水淡水水的情况.野生动物野生动物

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