... accumulation of trifluoroacetic acid in precipitation as a "worrisome forecast for decades to come" , while others argue that current levels of this compound are minuscule and do not pose a threat to human health. What is Trifluoroacetic Acid (TFA) Trifluoroacetic acid (TFA) is a synthetic organic acid that is structurally similar to acetic acid, but with fluorine atoms replacing hydrogen. The strong carbon-fluorine bonds make TFA extremely stable and nearly indestructible through natural processes....