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Per- and polyfluoroalkyl substances (PFAS[1] or PFASs[2]) are a group of synthetic organofluorine chemical compounds that have multiple fluorine atoms attached to an alkyl chain; there are 7 million such chemicals according to PubChem. [3] PFAS came into use after the invention of Teflon in 1938 to make fluoropolymer coatings and products that ...
PFAS accumulates in the body, which is why EPA set their limits for drinking water at 4 parts per trillion for two common types — PFOA and PFOS — that are phased out of manufacturing but still ...
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 ...
The DoD has "used foam containing" PFAS chemicals "in exercises at bases across the country". The DoD, therefore, "risks the biggest liabilities" in relation to the use of PFAS chemicals according to Politico. [71] March 2018 The PFAS Expert Health Panel on PFAS submitted their commissioned report to the Australian government. [89]
All of these methods promote the formation of hydroxyl radicals or other oxidizing agents that can oxidize PFAS and break its C−C bonds. [3] [4] However, the remediation of PFAS depends on the environmental medium where the these compounds reside. For example, the treatment of contaminated soil, biosolids and water is not the same, and risk ...
PFAS, or per- and polyfluorinated substances, were invented in the late 1930s and have been used to make coatings and products that resist heat, grease, stains, oil and water, according to the ...
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). It is an anthropogenic (man-made) fluorosurfactant, now regarded as a global pollutant.
"This FDA-led effort represents a positive step forward as we continue to reevaluate chemicals authorized for use with, and in, food," said Jim Jones, the FDA's deputy commissioner for human foods.
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