聚甲西洛透析被动采样器监测化溶剂污染的地点 - 一个实地研究
1Department of Environmental Engineering, National Chung Hsing University, 250 Kuo-kuang Road, Taichung, 402, Taiwan.
Chemosphere
|March 10, 2024
概括
一个新的聚二甲基 (PDMS) 透析被动采样器准确地绘制了地下三乙烯 (TCE) 污染的地图. 该方法提供高分辨率数据,用于在复杂受污染的环境中改进概念现场模型 (CSM).
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 分析化学 分析化学
背景情况:
- 像三乙烯 (TCE) 这样的化溶剂的地下污染在理解分布和开发概念性地点模型 (CSM) 中带来了挑战.
- 准确的,高分辨率的垂直污染物度分析对于在不和和和区域有效地绘制污染地图至关重要.
研究的目的:
- 开发和现场评估基于Fick的法则的聚二甲基 (PDMS) 透析被动采样器,用于特征TCE污染.
- 将PDMS被动采样器的性能与土壤气体和地下水的现有采样方法进行比较.
主要方法:
- 在两个被TCE污染的地点对PDMS透析被动样品进行实地测试.
- 将PDMS采样器结果与便携式监测设备 (土壤气体) 和商用聚乙烯被动扩散袋 (水管) 的比较.
- 在监测井内多个深度密集部署PDMS采样器,用于高分辨率分析.
主要成果:
- PDMS采样器在不和区中产生了更具代表性的土壤气体度,避免了主动采样方法引起的干扰.
- 和含水层中的PDMS采样器结果与聚乙烯被动扩散袋的相关性很好,并且在低TCE度下显示出更高的灵敏度.
- 高分辨率的垂直分析数据使得能够系统地建立一个全面的三维CSM.
结论:
- PDMS透析被动采样器是高分辨率污染物分析的可靠工具,可用于不和和和的地下区域.
- 这种被动采样技术在精度和灵敏度方面具有优势,特别是在复杂的受污染场所.
- 由PDMS采样器生成的数据显著增强了开发可靠的概念性现场模型,以进行有效的整治.
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