A recent study led by researchers from Duke University, conducted with colleagues from Wayne State University and the University of North Carolina at Charlotte, found that four of the top-rated anti-fog sprays contained up to 20.7 milligrams of per- and polyfluoroalkyl substances (PFAS) per milliliter of solution. This study has received a lot of exposure in popular media, and it should not be overlooked. The researchers used several creative approaches to obtain a comprehensive characterization of the anti-fog sprays, including using total organic fluorine measurements, GC-MS methods and both nominal mass and accurate mass instruments. A unique finding of the study was the detection of fluorotelomer ethoxylates (FTEOs), which are relatively unknown PFAS compounds.
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The hidden ingredient in anti-fog sprays: PFAS
A recent study led by researchers from Duke University, conducted with colleagues from Wayne State University and the University of North Carolina at Charlotte, found that four of the top-rated anti-fog sprays contained up to 20.7 milligrams of per- and polyfluoroalkyl substances (PFAS) per milliliter of solution. This study has received a lot of exposure in popular media, and it should not be overlooked. The researchers used several creative approaches to obtain a comprehensive characterization of the anti-fog sprays, including using total organic fluorine measurements, GC-MS methods and both nominal mass and accurate mass instruments. A unique finding of the study was the detection of fluorotelomer ethoxylates (FTEOs), which are relatively unknown PFAS compounds.
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