Journal of Radioanalytical and Nuclear Chemistry

, Volume 249, Issue 2, pp 513–517 | Cite as

Distribution of tritium between water and exchangeable hydrogen bridges of biomolecules

  • F. Baumgärtner
  • Ch. Kardinal
  • G. Müllen


The fractionation factor of tritium between water and biomoleculeswhich are structured by hydrogen bridges, is found to be around 2. In additionto an intramolecular accumulation, an extra-molecular one is found to be about1.4 in the hydration sheets. During growth of plants (maize), the growth incrementof tritium in non-exchangeable organically bound tritium (OBT) is about 2.4times (140% larger than) the growth increment of hydrogen. The intrinsic growthrate of tritium is about 20 percent larger than that of hydrogen. Tritiumbound in water overtakes its kinetic delay in photosynthetic or metabolicreactions according to the larger mass by the fast established thermodynamicisotope effect of proton-triton exchange.


Hydrogen Physical Chemistry Maize Hydration Inorganic Chemistry 
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Copyright information

© Kluwer Academic Publishers/Akadémiai Kiadó 2001

Authors and Affiliations

  • F. Baumgärtner
    • 1
  • Ch. Kardinal
    • 1
  • G. Müllen
    • 1
  1. 1.Institut für RadiochemieTechnische UniversitätMunichGermany

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