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在批量漏和列漏试验中比较PFAS分析.

Ute Kalbe1, Christian Piechotta2, Nicole Bandow2,3

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概括
此摘要是机器生成的。

实验室的浸出试验评估了污染物的流动性. 列透测试提供了比批量测试更可靠的 perfluoroalkyl 和 polyfluoroalkyl 物质 (PFAS) 释放数据,特别是对于短链 PFAS.

关键词:
批量测试试验 批量测试试验柱体透试验 柱体透试验化物预处理方法泄漏 泄漏是一种泄漏.在PFAS中,有很多方法.土壤 土壤土壤.

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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:

  • perfluoroalkyl 和 polyfluoroalkyl 物质 (PFAS) 是持久的环境污染物.
  • 评估PFAS在土壤中的流动性对于环境风险评估至关重要.
  • 实验室浸出试验是评估污染物流动性的标准方法.

研究的目的:

  • 为了比较PFAS污染土壤的批量和列透漏试验的等价性.
  • 为了评估不同的液体/固体比率 (L/S) 对PFAS释放的影响.
  • 评估目前用于在土壤和化物中检测PFAS的分析标准的适用性.

主要方法:

  • 使用四种PFAS污染土壤进行的比较实验室漏试验.
  • 在2L/kg和10L/kg的L/S比率下进行的批量和列透试验.
  • 在土壤和化物中分析了10种选定的 perfluoroalkyl 和 polyfluoroalkyl 物质 (PFAS).

主要成果:

  • 与批量测试相比,列透测试显示了较小的复制差异,表明更高的可靠性.
  • 批量测试往往会高估短链PFAS的释放量,特别是碳酸盐的释放量.
  • 目前用于土壤分析的DIN标准检测极限对于一些 perfluorocarboxylic 酸 (PFCA) 和 perfluorosulfonic 酸 (PFSA) 是不够的.

结论:

  • 对评估PFAS流动性而言,列透试验比批量试验更具代表性.
  • 批量测试对短链PFAS释放的过高估计需要仔细解释结果.
  • 需要改进分析方法和标准,以准确量化污染土壤中的PFAS,并进行质量平衡计算.