Scientific Basis for Managing PFAS as a Chemical Class
Scientific Basis for Managing PFAS as a Chemical Class
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DOI：
10.1021/acs.estlett.0c00255
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发表时间：
2020-06-30
影响因子：
10.9
通讯作者：
Blum A
中科院分区：
文献类型：
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作者：
Kwiatkowski CF;Andrews DQ;Birnbaum LS;Bruton TA;DeWitt JC;Knappe DR;Maffini MV;Miller MF;Pelch KE;Reade A;Soehl A;Trier X;Venier M;Wagner CC;Wang Z;Blum A
本评论为将被称为全氟烷基化合物(全氟烷基和多氟烷基物质)的数千种化学品作为一个化学类别进行管理提供了科学依据。这一类包括全氟烷基酸、全氟烷基醚酸及其前体；含氟聚合物和全氟聚醚；以及其他全氟烷基酸。分类方法的基础是与它们的物理化学、环境和毒物学特性有关的。具体地说，迄今为止所研究的全氟辛烷磺酸的高持久性、累积潜力和/或危险(已知和潜在的)值得将所有全氟辛烷磺酸作为一个类别对待。举例说明了一些全氟辛烷磺酸是如何受到监管的，以及一些企业如何在其产品和采购决策中避免所有全氟辛烷磺酸。最后，我们提出了政府和行业如何应用基于类别的方法的备选方案，强调了消除全氟化铝非必要用途的重要性，并进一步开发了更安全的替代方案和方法，以从环境中消除现有的全氟化碳。
This commentary presents a scientific basis for managing as one chemical class the thousands of chemicals known as PFAS (per- and polyfluoroalkyl substances). The class includes perfluoroalkyl acids, perfluoroalkylether acids, and their precursors; fluoropolymers and perfluoropolyethers; and other PFAS. The basis for the class approach is presented in relation to their physicochemical, environmental, and toxicological properties. Specifically, the high persistence, accumulation potential, and/or hazards (known and potential) of PFAS studied to date warrant treating all PFAS as a single class. Examples are provided of how some PFAS are being regulated and how some businesses are avoiding all PFAS in their products and purchasing decisions. We conclude with options for how governments and industry can apply the class-based approach, emphasizing the importance of eliminating non-essential uses of PFAS, and further developing safer alternatives and methods to remove existing PFAS from the environment.