An Emerging Family of Contaminants:  PFASs

PFASs are a family of complex compounds primarily consisting of perfluorooctyl sulfonate (PFOS) and perfluorooctanoic acid (PFOA).  PFASs have very useful properties and therefore were included in many products in the past. PFASs have often been used to make materials stain-resistant, waterproof, and/or nonstick.  When added to fire-fighting foam, these chemicals are very effective at […]