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Potential accumulation of a CFC-replacement degradation product in seasonal wetlands.

Author(s) : TROMP T. K., KO M. K. W., RODRIGUEZ J. M., SZE N. D.

Type of article: Article

Summary

Atmospheric degradation of HCFCs 123 and 124 and HFC 134a is expected to produce trifluoroacetate (TFA), which is removed from the atmosphere mainly by rain. The modelling analysis presented in the article indicates that in conditions of high evapotranspiration, TFA could attain appreciable concentrations in the local surface waters of seasonal wetlands within a few decades, if removal by degradation and seepage is limited. Although the authors do not believe that TFA would have any biological effects in seasonal wetlands if its concentration is limited to the projected global average rainwater concentration, their model indicates that TFA could be above it locally. Consequently, they think it is prudent to gather additional data to ascertain the accumulation rate of TFA in wetlands and its biological effects.

Details

  • Original title: Potential accumulation of a CFC-replacement degradation product in seasonal wetlands.
  • Record ID : 1996-3310
  • Languages: English
  • Subject: Environment, General information
  • Source: Nature - vol. 376 - n. 6538
  • Publication date: 1995/07/27
  • Document available for consultation in the library of the IIR headquarters only.

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