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评估饮用水中的PFAS:来自捷克共和国基于风险的监测方法的见解

Frantisek Kozisek¹, Darina Dvorakova², Filip Kotal¹

¹National Institute of Public Health (NIPH), Department of Water Hygiene, Srobarova 49/48, Prague, 100 00, Czech Republic.

|December 18, 2024

概括

在捷克的饮用水中发现了和多基物质 (PFAS),一些样本超过了可容忍的每周摄入量. 基于风险的监测在商业井中发现了更高的PFAS,但没有证明比随机抽样更有效.

科学领域:

环境化学环境化学
分析水质分析水质
污染物监测污染物监测

背景情况:

和多醇基物质 (PFAS) 是全球发现的持续性环境污染物.
饮用水是PFAS的潜在暴露途径,需要监测和风险评估.
捷克共和国的供水没有被广泛研究PFAS污染.

研究的目的:

调查捷克饮用水源中28种不同的PFAS的存在和含量.
评估基于风险的监测方法对PFAS检测的有效性.
评估潜在的人类健康风险和饮用水中PFAS的监管合规性.

主要方法:

分析了27个自来水样本和21个地表水样本,来自吉泽拉河.
在固相提取后,使用超高性能液体色谱与并联质谱 (UPLC-MS/MS) 测量了28种PFAS.
总PFAS度 (PFAS) 的计算和与欧盟监管限制和可容忍每周摄入量 (TWI) 的比较.

主要成果:

龙头水中的PFAS总度从无法检测到90.8 ng/L不等,其中PFPeA,PFHxA,PFHpA和PFBS是最常见的.
商业井的PFAS含量高于自来水,特别是C4-C9 完全化碳酸 (PFCAs).
吉泽拉河的地表水表现出更广泛的PFAS范围,下游的PFAS增加和PFOS水平升高.
估计的每周摄入量表明,从最受污染的样本中,成人和儿童的TWI可能会超过.

结论:

捷克饮用水中存在PFAS,其度和分布各不相同.
虽然商业井的污染率较高,但基于风险的监测并非比随机抽样更有效.
进一步的详细和区域监测至关重要,以确定所有PFAS污染源,包括非明显的污染源.

关键词:

暴露暴露暴露在PFAS中,有很多方法.基于风险的监测是基于风险的监测.水水水水水,这是一个很好的方法.

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