perfluorooctanoic acid (pfoa, perfluorooctanoate) carcinogenic pollutant molecule

perfluorooctanoic acid pfoa c8 perfluorooctanoate perfluorinated carboxylic fluorine fluorosurfactant surfactant toxicant carcinogenic cancer persistent organic pollutant environment ptfe organofluorine blood serum plasma fluorotelomer toxicology molecule atoms atomic model molecular compound composition chemical chemistry bond structure formula circle ring line drawing skeletal flat icon stylized style