Health
High-level toxic “eternal chemicals” found in anti-fog sprays for glass | US News
Anti-fog sprays and cloths commonly used to prevent condensation on eyeglasses and face shields may contain high levels of potentially toxic PFAS.Chemicals foreverAccording to a new study led by Duke University.
Researchers have tested four top-class anti-fog sprays and five top-class anti-fog cloths sold by Amazon. In all nine products, experts have discovered Fluorotelomer Alcohol (FTOH) and Fluorotelomer ethoxylates (FTEO), two types of perfluorinated and polyfluorinated alkyl substances (PFAS).
PFAS has been called a chemical forever because of its long life in the environment.
“Our tests show that the spray contains up to 20.7 milligrams of PFAS per milliliter of solution, which is a fairly high concentration,” said Nicholas, a postdoctoral fellow at the Nicholas School of Environmental Studies, Duke University. Hellcart, Principal Investigator, said.
Exposure to some PFAs, especially perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), is associated with cancer, thyroid disease, childbirth complications, and other health problems. ..
Herkert says that scientists are unaware of the health risks they may pose because FTOH and FTEO have not been extensively studied, but in the current study, FTOH inhaled or absorbed through the skin is in the body. It suggests that it can decompose and become a toxic and long-lasting PFA.
The FTEO used in all four anti-fog sprays was also analyzed in a new study, showing substantial cell change toxicity and conversion to adipocytes during laboratory tests, Herkert said.
Heather Stapleton, a prominent professor of environmental chemistry and health at Duke, said:
Stapleton began his research after reviewing the ingredients in the anti-fog spray bottle he purchased for his 9-year-old daughter.
Stapleton has no ingredients listed in the other eight products, and it is virtually impossible to determine if it contains toxic chemicals until it is analyzed using laboratory equipment. Said that.
This study, conducted by Herkert and Stapleton with researchers at Duke University, Wayne State University, and the University of North Carolina at Charlotte, is the second to date to focus on FTEOS. Researchers published their peer-reviewed studies on January 5 in the journal Environmental Science & Technology.
Herkert and Stapleton said more research is needed to expand the initial findings, and larger studies, including biological testing, are the next step. Studies involving larger sample size sprays and fabrics may also help identify other unknown chemicals used in these products.
“Thanks to Covid, more people than ever, including many medical professionals and other first responders, use these sprays and cloths to keep their glasses from fogging when wearing masks and face shields. We do, “says Stapleton. “They deserve to know what is in the product they are using.”
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