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Per- and polyfluoroalkyl substances are a group of synthetic organofluorine chemical compounds that have multiple fluorine atoms attached to an alkyl chain. Different organizations use different definitions for PFAS, leading to estimates of between 8,000 and 7 million chemicals within the group.
Examples include PFOA and PFOS, frequently present in water-resistant textiles and sprays conferring water-resistant properties to textiles and fire-fighting foam. [3] Data from animal studies of PFOA indicate that it can cause several types of tumors and neonatal death and may have toxic effects on the immune, liver, and endocrine systems.
Perfluorohexanesulfonic acid (PFHxS) (conjugate base perfluorohexanesulfonate) is a synthetic chemical compound.It is one of many compounds collectively known as per- and polyfluoroalkyl substances (PFASs).
The FDA has issued a request for information seeking scientific data on concentrations of per- and polyfluoroalkyl substances (PFAS) in seafood, the surrounding environment and processing water.
Certain pricier styles of smartwatch wristband may not just be helping Americans stay fit — they may be exposing unsuspecting wearers to a hefty dose of “forever chemicals,” a new study has ...
Perfluorooctanesulfonic acid (PFOS) (conjugate base perfluorooctanesulfonate) is a chemical compound having an eight-carbon fluorocarbon chain and a sulfonic acid functional group, and thus it is a perfluorosulfonic acid and a perfluoroalkyl substance (PFAS).
Chemicals found in sewage sludge that some farmers use to fertilize fields and pastures can pose a threat to human and animal health, the US Environmental Protection Agency said Tuesday.
Here the health effects of PFNA, one of the ten most common PFAS, has been more widely studied. [82] Some of the "highest levels" of PFNA "ever found anywhere" are present in the Superfund Coakley landfill site in North Hampton, New Hampshire, and Greenland, New Hampshire. [98] Perfluorooctanesulfonic acid (PFOS) C 8 HF 17 O 3 S