What are pfos?

Some articles on pfos:

Bottlenose Dolphin - Relation To Humans - Threats
... The man-made chemical perfluorooctanesulfonic acid (PFOS) may be compromising the immune system of bottlenose dolphins ... PFOS affects the immune system of male mice at a concentration of 91.5 ppb, while PFOS has been reported in bottlenose dolphins in excess of 1 ppm ...
Scotchgard
... and toxicity of perfluorooctane sulfonate (PFOS), the "key ingredient" of Scotchgard ... The compound perfluorooctanesulfonamide (PFOSA), a PFOS precursor, was an ingredient and also has been described as the "key ingredient" of Scotchgard. 3M announced the phaseout of the production of PFOA, PFOS, and PFOS-related products ...
Guernsey Airport - Environment
... In 2002, an overturned firetruck discharged PFOS fire retardant onto the airport apron and surrounding soil ... PFOS was added to Annex B of the Stockholm Convention on Persistent Organic Pollutants in May 2009 and has been shown to cause chronic kidney disease amongst people and ... Traces of PFOS spilt later entered the island's water supply although quantities were not high enough to make it unsafe to drink ...
Fluorine Compounds - Environmental Concerns - Biopersistance
... (PFOA) and perfluorooctanesulfonic acid (PFOS), used in waterproofing sprays, are persistent global contaminants ... One study indicates that PFOS levels in wildlife are starting to go down because of the recent reduced production of that chemical ... While both PFOA and PFOS cause cancer in high quantities in animals, studies on exposed humans have not been able to prove an impact at current exposures ...
Perfluorinated Compounds - Examples
... PFOS or perfluorooctanesulfonic acid, used in the semiconductor industry, 3M's former Scotchgard formulation, and 3M's former fire-fighting foam mixture ... PFBS or perfluorobutanesulfonic acid, used as a replacement for PFOS in 3M's reformulated Scotchgard ... POSF or perfluorooctanesulfonyl fluoride, used to make PFOS-based compounds ...