Per- and polyfluoroalkyl substances (PFAS) are industrial chemicals which are used in several industrial processes and consumer products, due to their special technical properties. This group of substances includes more than 4,700 different compounds.

In the perfluoroalkyl substances sub-group, perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) are the most thoroughly studied substances. Like many PFAS, these two compounds are not readily degradable, and are now detectable in the environment, the food chain, and in humans.


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