Climate-impacting refrigerants and blowing agents are often replaced by halogenated substances which, despite their low global warming potential, are not unproblematic for the environment. The study examines quantities used and emissions today and in the future as well as degradation pathways and products. An environmentally relevant degradation product is the persistent trifluoroacetic acid (TFA). A two-year measurement campaign of TFA at 8 monitoring sites in Germany showed that TFA levels in precipitation are already several times higher than they were 25 years ago and are expected to rise even further. Therefore, the use and development of products with halogen-free refrigerants and blowing agents must be further accelerated.
Persistent degradation products of halogenated refrigerants and blowing agents in the environment: type, environmental concentrations, and fate with particular regard to new halogenated substitutes with low global warming potential
Texte | 73/2021
Dr. David Behringer, Dr. Felix Heydel, Barbara Gschrey, Steffi Osterheld, Winfried Schwarz, Kristina Warncke, Finnian Freeling, Dr. Karsten Nödler, Dr. Stephan Henne, Dr. Stefan Reimann, Markus Blepp, Wolfram Jörß, Ran Liu, Dr. Sylvie Ludig, Ina Rüdenauer, Dr. Stefan Gartiser
3717 41 305 0
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