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What are PFAS?

December 10, 2019

Per- and polyfluoroalkyl substances (PFAS) are a complex group of over 3,000 man-made fluorinated organic chemicals that have been used worldwide since the 1940s in industry and consumer products such as non-stick cookware, water-repellent clothing, stain resistant fabrics and carpets, cosmetics, firefighting foams, and products that resist grease, water, and oil. The most studied PFAS are perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS). PFOA and PFOS have been phased out of production and use in the United States but may still be manufactured and used in other countries. During production and use, PFAS can migrate into the soil, water, and air. Most PFAS (including PFOA and PFOS) are resistant to degradation, so they do not breakdown in the environment. As a result of their widespread use and persistence, PFAS are present at low concentrations in the environment and many food products. Additionally, PFAS are found in the blood of humans and animals throughout the world. Potential Adverse Health Affects Studies indicate that PFOA and…
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