Definition of PFAS

A family of commercial chemicals' names typically give a good sense of the related compounds that make up the family. Pesticides with organophosphates are one instance. Another is flame-retardants made of bromine.

Per- and Polyfluoroalkyl Substances (PFAS) is a less specific name, nevertheless. A specific definition will determine what this group of tens of thousands of synthetic compounds, some of which are poisonous, and which ....