短暂的空气-水界面区域对不和土壤中PFOA传输的影响
Craig Klevan1, Uriel Garza-Rubalcava1, Linda M Abriola1
1Brown University, School of Engineering, Providence, RI, United States of America.
Journal of contaminant hydrology
|January 21, 2026
概括
降水事件可以通过减少土壤空气-水接口 (AWI) 来暂时增加和多基物质 (PFAS) 出. 这项研究量化了AWI的PFAS质量转移,显示波动对土壤污染物运输的影响.
科学领域:
- 环境化学环境化学
- 土壤科学 土壤科学
- 污染物水文学污染物水文学
背景情况:
- 和多基基物质 (PFAS) 在剂区表现出长期的持久性.
- 吸附到土壤空气水接口 (AWI) 影响了PFAS的流动性.
- 由降水引起的AWI区域的波动可以改变PFAS的保留和释放.
研究的目的:
- 在变化的水和下,研究PFAS从AWI向孔水的质量转移.
- 确定AWI动态对PFAS通过土壤配置文件传输的影响.
- 量化减少AWI对PFAS漏的影响.
主要方法:
- 进行了批量和柱体实验,使用酸和果土壤.
- 使用了水和和不和的流量条件.
- 采用了数学模型,包括限速吸附/脱吸,不动水域和动态AWI面积估计.
主要成果:
- 在不和条件下,在AWI观察到限速PFOA吸附/脱附.
- 记录了由于AWI崩而导致的过渡性湿 (60%至82%和) 期间废水中PFOA度的升.
- 对PFAS质量转移和运输的实验数据进行验证的模型预测.
结论:
- 降雨引起的AWI降低可以暂时增加PFAS漏.
- 化PFAS对土壤水和AWI的动态变化敏感.
- 多相反应式运输模型可以预测受AWI动态影响的PFAS运输波动.
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