WASHINGTON: "Forever chemicals" used in daily items like nonstick pans have long been linked to serious health issues -- a result of their toxicity and extreme resistance to being broken down as waste products.
Chemists in the United States and China on Thursday said they had finally found a breakthrough method to degrade these polluting compounds, referred to as PFAS, using relatively low temperatures and common reagents. Their results were published in the journal Science, potentially offering a solution to a longstanding source of harm to the environment, livestock and humans.
"It really is why I do science -- so that I can have a positive impact on the world," senior author William Dichtel of Northwestern University told reporters during a news conference. PFAS, or per- and polyfluoroalkyl substances, were first developed in the 1940s and are now found in a variety of products, including nonstick pans, water-resistant textiles, and fire suppression foams.
Over time, the pollutants have accumulated in the environment, entering the air, soil, groundwater and lakes and rivers as a result of industrial processes and from leaching through landfills.