perfluorooctanesulfonic acid perfluorooctane sulfonate, pfos persistent organic pollutant molecule. skeletal formula.

perfluorooctanesulfonic acid perfluorooctane sulfonate pfos persistent organic pollutant molecule skeletal formula fluorosurfactant fabric protector organofluorine blood plasma hydrogen carbon fluorine oxygen sulfur bioacculumative toxic poison endocrine disruption disruptor neonatal precursor atoms atomic molecular compound composition chemical chemistry structure line drawing flat icon