What is PFTBA and why is it in Our Atmosphere?
PFTBA is notable for two reasons. 1) It is the most radiatively-efficient chemical ever found meaning it breaks all other chemical records for its potential to affect the climate and 2) we have no one but ourselves to thank for introducing PFTBA to the ecosystem, as it occurs nowhere in nature.
According to a recent article from the Environmental News Service, “PFTBA has been in use since the mid-20th century for applications in electrical equipment. It is used in thermally and chemically stable liquids marketed for use in electronic testing and as heat transfer agents. There are no known processes that would destroy or remove PFTBA in the lower atmosphere, so it has a very long lifetime, possibly hundreds of years. It is destroyed in the upper atmosphere.”
“PFTBA is extremely long-lived in the atmosphere and it has a very high radiative efficiency; the result of this is a very high global warming potential,” said Hong.
This is just what we need to think about after experiencing some of the hottest years and wildest wildfires in recent history. We thought we’d targeted the main culprit with CO2, but maybe that isn’t the whole story.