低密度聚乙烯 (LDPE) 被动采样器的应用,用于在地下水中监测PAH
Ibukun Ola1, Carsten Drebenstedt2, Robert M Burgess3
1Institute of Mining and Special Civil Engineering, Technical University Mining Academy, Gustav-Zeuner Street 1A, 09599, Freiberg, Germany. Ibukun.Ola@doktorand.tu-freiberg.de.
Environmental science and pollution research international
|August 29, 2024
概括
低密度聚乙烯 (LDPE) 被动采样器有效地监测了地下水中的多环芳 (PAH),证实了准确的自由溶解度测量平衡. 这项研究证明了LDPE.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 平衡被动采样越来越多地用于监测各种环境矩阵中的疏水性有机化合物 (HOC).
- 与地表水和沉积物相比,对地下水的被动采样的应用是有限的.
- 多环芳 (PAH) 是重要的地下水污染物,影响生态和人类健康风险评估.
研究的目的:
- 评估低密度聚乙烯 (LDPE) 被动采样器在地下水中PAHs的现场监测中的实际应用.
- 确定平衡条件并测量受污染的地下水井中自由溶解的PAH度 (Cw).
- 通过被动抽样测量的PAH度与长期的PAH总数据进行比较.
主要方法:
- 在三个受污染的地下水井中部署80天的装载性能参考化合物 (PRC) 的LDPE被动采样器.
- 使用PRC释放来确认LDPE样本和PAHs的地下水之间的平衡.
- 测量自由溶解的PAH度 (Cw) 和与过总度 (C总) 的比较.
主要成果:
- 在部署期间,为PAHs的分子量在178和228之间建立了LDPE-地下水平衡.
- 自由溶解的PAH度 (Cw) 比过总度 (C总) 低一至三个数量级.
- 估计的LDPE清除量明显低于地下水的周转量,排除了耗尽性采样.
结论:
- LDPE被动采样器是一种可行的和有效的工具,用于对地下水中的PAH进行定量评估.
- 这项研究提供了第一个使用LDPE用于地下水PAH监测的平衡被动采样的公布证据.
- 在地下水中测量PAHs的Cw对于准确的生态和人类健康风险评估至关重要.
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