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土壤合物可以通过作为有效的载体,显著增强聚二乙烯在地下水中的传播
Lin Duan1, Min Li1, Jiameng Liu1
1College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin 300350, China.
Journal of environmental sciences (China)
|July 13, 2024
概括
土壤合物充当了阻燃剂甲 (BDE-209) 的载体,显著增强了其在地下水中的运输. 这就解释了污染的地下水系统中不溶性PBDE的存在.
科学领域:
- 环境化学环境化学
- 环境科学 环境科学
- 地质化学 地质化学
背景情况:
- 聚二乙烯 (PBDE) 是常见的阻燃剂,在电子垃圾场附近的土壤中发现.
- PBDE与土壤合物有关,这表明可能通过合物促进的运输污染地下水.
- 土壤合物在增强PBDE在地下水中的传播中的作用仍然在很大程度上未得到量化.
研究的目的:
- 为了研究和多孔介质中脱基 (BDE-209) 和土壤合体的共同运输.
- 为了确定土壤合物对地下水环境中的PBDE流动性的影响程度.
主要方法:
- 从中国天津的电子废物回收场所收集的土壤样本.
- 分析了PBDE含量的合物,确定BDE-209是最丰富的同源物.
- 在不同的流速,pH值和离子条件下进行模拟地下水运输的柱体实验.
- 量化了BDE-209和土壤合物的化和保留质量.
主要成果:
- 从电子垃圾场释放的土壤合物含有高度的PBDE,特别是BDE-209.
- 在测试条件下,合物在和沙柱中表现出显著的移动性.
- 化和保留的BDE-209质量与化和保留的土壤合物质量有很强的相关性.
- 在整个运输过程中,PBDE仍然与土壤合物结合在一起.
结论:
- 土壤合物有效地起到PBDE的载体作用,大大促进了它们在地下水中的运输.
- 体促进的运输是解释污染地点地下水中不溶性PBDE存在的可能机制.
- 这项研究强调了土壤合物在PBDE的环境命运和运输中的关键作用.
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