美国环保署（EPA）对PFAS的定义与经合组织（OECD）所采用的定义不一致，后者获得广泛认可，并将某些氢氟碳化物（HFC）和氢氟烯烃（HFO）以及TFA纳入其中。
【英文原文】
原标题：Scientist Urges EPA to Broaden Definition of PFAS to Include TFA
The EPA definition of PFAS is at odds with one used by the OECD that is widely accepted and includes certain HFCs and HFOs, and TFA.
