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Environmental questions about HFOs
2017/12/22

21 December 2017
At MOP29, European Commission’s Owen says TFA formation from HFOs requires further evaluation.


MOP29, in Montreal, Canada

HFOs came up as a topic of some concern last month at MOP29 - the 29th Meeting of the Parties to the Montreal Protocol.

Philip Owen, from the European Commission, the EU’s executive arm, cited the Ozone Research Managers’ conclusion that the formation of toxic TFA (trifluoroacetic acid), as well as tropospheric ozone, results from the degradation of HFOs. This "is a concern which requires further research and evaluation."

Questions have been raised about HFOs’ impact on the environment, particularly their decomposition in the atmosphere into TFA, a long-lasting substance that descends to the earth as a form of “acid rain” and accumulates in freshwater bodies.

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