美国国家公园地表水中的微量有机污染物:流行程度和生态背景
Sarah M Elliott1, Kerensa A King2, Aliesha L Krall1
1U.S. Geological Survey Upper Midwest Science Center, Mounds View, Minnesota, USA.
Environmental pollution (Barking, Essex : 1987)
|September 22, 2024
概括
在美国国家公园水域中检测到微量有机污染物 (TrOCs),农药和药品分别与农田和废水处理厂有关. 这项研究为未来的水质监测提供了关键的基线.
科学领域:
- 环境化学环境化学
- 生态毒理学 生态毒理学
- 水质监测 水质监测
背景情况:
- 美国国家公园的地表水是重要的生态系统,可能受到人类活动的影响.
- 微量有机污染物 (TrOCs) 越来越多地被认为是水生环境中的新兴污染物.
- 了解TROC的存在和来源对于保护公园生态系统至关重要.
研究的目的:
- 描述美国国家公园地表水中TROCs的发生和度.
- 通过将TROC度与生物活性基准进行比较来评估潜在的生态风险.
- 为了确定影响TROC分布的流域特征.
主要方法:
- 从46个美国国家公园的264个地点收集了地表水样本 (2009-2019).
- 分析了多达340种TROC的样本,包括药品,个人护理产品和农药.
- 相关的TROC检测频率和度与流域特征,如土地覆盖面和点源.
主要成果:
- 检测到155种TROC,发现27种TROC (主要是农药) 的高度.
- 废水处理厂和农业用地使用分别是药品和农药的重要预测因素.
- 尽管TROC度往往不经常检测到,但当它存在时,它与其他研究可比.
结论:
- 这项研究提供了迄今为止关于美国国家公园水域TROC的最广泛的数据集.
- 流域特征显著影响检测到的TROC的类型和数量.
- 这些发现为国家公园未来的监测和保护工作奠定了重要基础.
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