While chemicals such as PFOA and PFOS have received widespread regulatory attention by the U.S. Environmental Protection Agency, ultra-short-chain PFAS have largely escaped routine testing because their small molecular size and chemical properties make them difficult to detect using established methods.
UnverifiedContext
While chemicals such as PFOA and PFOS have received widespread regulatory attention by the U.S. Environmental Protection Agency, ultra-short-chain PFAS have largely escaped routine testing because their small molecular size and chemical properties make them difficult to detect using established methods.
Evidence
www.canada.ca · context
Recently, more studies have been conducted on short-chain PFAS, which have been used as replacements for PFOA and PFOS.
naturalrefrigerants.com · context
Researchers at the New Jersey Institute of Technology have found trifluoroacetic acid (TFA) in 86.7% of 113 samples of tap water and bottled beverages collected in New Jersey in what is called the first statewide monitoring study of ultra-short-chain PFAS in the U.S. Out of 70 tap-water samples, TFA, a byproduct of HFO-1234yf and other f-gases, was detected in 91.4%, with concentrations ranging 74 to 1360ng/L, and a mean of 573ng/L.
History
- · Unverified · initial