They protect pizza boxes against grease penetration, make outdoor clothing weatherproof, and are also found in groundwater and in the human body: perfluoroalkyl substances, or PFASs for short. Some representatives of this large group of chemicals are now classified as hazardous to health or even carcinogenic. The EU n now wants to ban a number of critical PFAS and is promoting the development of substitute materials for PFAS in four large collaborative projects, such as the EU project Zero-F.
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