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[13] [18] [19] [8] Since PFAS compounds are highly mobile, they are readily absorbed through human skin and through tear ducts, and such products on lips are often unwittingly ingested. [20] Due to the large number of PFAS, it is challenging to study and assess the potential human health and environmental risks; more research is necessary and ...
An example of PFAS is the fluorinated polymer polytetrafluoroethylene (PTFE), which has been produced and marketed by DuPont under its trademark Teflon. GenX chemicals and perfluorobutanesulfonic acid (PFBS) are organofluorine chemicals used as a replacement for PFOA and PFOS.
Fluorosurfactants (PFAS) reduce surface tension by concentrating at the liquid-air interface due to the lipophobicity of polyfluorocarbons. Chlorofluorocarbons are also perfluorinated compounds, many of which were formerly used as refrigerants ( Freon ) until they were implicated in ozone degradation .
Studies have shown that the chemicals have been linked to reproductive and developmental problems as well as cancerous tumors.
The researchers discovered that all of the 13 bands that advertised that they were made from fluoroelastomers contained fluorine, which indicates the potential presence of PFAS. Two of the nine ...
PFAS tests that claim to offer results within minutes or at home should be avoided, according to Canter and Professor Mark D. Krahling, an analytical chemist at the University of Southern Indiana ...
In 2024, a worldwide study of 45,000 groundwater samples found that 31% of samples contained levels of PFAS that were harmful to human health; these samples were taken from areas not near any obvious source of contamination. [52] Soil is also contaminated and the chemicals have been found in remote areas such as Antarctica. [53]
A new EU drinking water directive issued in 2020 adopted PFAS limit values. The limit values are 0.1 μg/L for the sum of 20 PFASs including PFHxS, and 0.5 μg/L for the sum of all PFASs. This directive is binding for all EU member nations. It is a minimum directive, and member states can elect to adopt stricter regulations. [19]