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Tritium speciation in environmental matrices by isotopic exchange

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Abstract

Tritium (3H) the radioactive isotope of hydrogen is a beta emitter with a half-life of 12.312 (25) years. It can integrate organics molecules of living organisms by following the water cycle and form the organically bound tritium fraction (OBT). In 2017, the IRSN published a report on the update of knowledge on tritium in the environment, taking up some of the questions that have been waiting to be answered since the publication of the Livre Blanc du Tritium by ASN in 2010. Among these, those concerning the behavior, fate and speciation of this radionuclide in the environment are still relevant. The existence of two forms of OBT is commonly accepted: a non-exchangeable fraction (NE-OBT) and an exchangeable fraction (E-OBT) with the near environment. However, there is no consensus on their definition, therefore several one can be found in the literature.
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Dates and versions

in2p3-02291303 , version 1 (08-07-2021)

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Attribution - CC BY 4.0

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  • HAL Id : in2p3-02291303 , version 1

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Anne-Laure Nivesse, Nicolas Baglan, Gilles F Montavon, Olivier Peron. Tritium speciation in environmental matrices by isotopic exchange. MIGRATION 2019: 17th International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere, Sep 2019, Kyoto, Japan. ⟨in2p3-02291303⟩
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