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爱荷华州饮用水源中的PFAS:化学和地理空间模式

Daria Dilparic¹, Matthew Graesch², Claire Hruby³

¹Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames, IA 50011, United States of America; Ames Water and Pollution Control Department, Ames, IA 50010, United States of America.

The Science of the total environment

|April 15, 2025

概括

和多基基物质 (PFAS) 污染了爱荷华州的水. 虽然地表水受到影响更频繁,但地下水的平均PFAS度更高,区域和地方因素影响污染模式.

科学领域:

环境科学环境科学
环境化学环境化学
公共卫生公共卫生

背景情况:

和多醇基物质 (PFAS) 是持久的,有毒的环境污染物.
PFAS对生态系统和人类健康构成风险.
了解 PFAS 在水资源中的分布至关重要.

研究的目的:

为了分析爱荷华州地表和地下水中的PFAS度.
为了确定PFAS污染的区域和地方模式.
评估PFAS对公共饮用水供应的威胁.

主要方法:

对爱荷华州地表水和地下水中公开可用的PFAS度数据的分析.
统计分析包括曼·惠特尼U测试,主要成分分析,ANOVA和图基的HSD测试.
受PFAS影响的社区的案例研究.

主要成果:

表面水源更有可能含有PFAS (94%),而不是地下水 (30%).
污染的地下水平均总PFAS度 (43.9 ng/L) 比表面水 (9.8 ng/L) 高.
PFBA和PFPeA在大多数地表水中占主导地位,而PFOS和PFOA在密西西比河上升,影响附近的地下水.

结论:

区域分析对于描述供水中的PFAS污染是有效的.
当地点源对非流动性地下水中的PFAS污染有重大影响.
了解区域和地方因素对于管理PFAS风险至关重要.

关键词:

地下水的地下水.在PFAS的分发上.源标识来源的标识源保护源保护表面的水是表面的水.

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