The high persistence of PFAS is sufficient for their management as a chemical class,Environmental Science: Processes & Impacts

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The high persistence of PFAS is sufficient for their management as a chemical class
Environmental Science: Processes & Impacts ( IF 4.3 ) Pub Date : 2020-10-29 , DOI: 10.1039/d0em00355g
Ian T Cousins ₁ , Jamie C DeWitt ₂ , Juliane Glüge ₃ , Gretta Goldenman ₄ , Dorte Herzke ₅ , Rainer Lohmann ₆ , Carla A Ng ₇ , Martin Scheringer ₃ , Zhanyun Wang ₈

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Per- and polyfluoroalkyl substances (PFAS) are a class of synthetic organic substances with diverse structures, properties, uses, bioaccumulation potentials and toxicities. Despite this high diversity, all PFAS are alike in that they contain perfluoroalkyl moieties that are extremely resistant to environmental and metabolic degradation. The vast majority of PFAS are therefore either non-degradable or transform ultimately into stable terminal transformation products (which are still PFAS). Under the European chemicals regulation this classifies PFAS as very persistent substances (vP). We argue that this high persistence is sufficient concern for their management as a chemical class, and for all “non-essential” uses of PFAS to be phased out. The continual release of highly persistent PFAS will result in increasing concentrations and increasing probabilities of the occurrence of known and unknown effects. Once adverse effects are identified, the exposure and associated effects will not be easily reversible. Reversing PFAS contamination will be technically challenging, energy intensive, and costly for society, as is evident in the efforts to remove PFAS from contaminated land and drinking water sources.

中文翻译：

PFAS 的高持久性足以将其作为化学品类别进行管理

全氟烷基物质和多氟烷基物质 (PFAS) 是一类具有不同结构、性质、用途、生物累积潜力和毒性的合成有机物质。尽管多样性很高，但所有 PFAS 的相似之处在于它们都含有对环境和代谢降解具有极强抵抗力的全氟烷基部分。因此，绝大多数 PFAS 要么不可降解，要么最终转化为稳定的最终转化产物（仍然是 PFAS）。根据欧洲化学品法规，PFAS 被归类为高持久性物质 (vP)。我们认为，这种高持久性足以引起人们对其作为化学品类别的管理以及逐步淘汰 PFAS 的所有“非必要”用途的足够关注。高持久性 PFAS 的持续释放将导致浓度增加，并增加已知和未知影响发生的可能性。一旦发现不良影响，暴露和相关影响将不容易逆转。扭转 PFAS 污染在技术上具有挑战性，需要大量能源，而且社会成本高昂，从受污染的土地和饮用水源中去除 PFAS 的努力就证明了这一点。

更新日期：2020-11-25

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