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The Recoil tritium labelling reaction as a function of tritium energy and molecular size

✍ Scribed by D. S. Urch; M. J. Welch; A. J. Johnston

Publisher: John Wiley and Sons
Year: 1967
Tongue: French
Weight: 322 KB
Volume: 3
Category: Article
ISSN: 0022-2135
DOI: 10.1002/jlcr.2590030506

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✦ Synopsis

Hydrocarbons can easily be labelled by recoil tritium atoms. Near the end of the recoil track, after the triton has been neutralised and whilst it still retains some excess translational energy, a tritium atom can replace hydrogen atoms in C-H bonds with high collision Cficiency. Results of studies on this reaction in hydrocarbons (ethylene, ethane, propylene, butane, n-pen fane and trans-butene-2) are analysed using the Estrup-Wolfgang method. It is found that the reactivity integral ( I ) for the labelling reaction increases with the size of the molecule labelled and that it is usually larger for an alkene than for the corresponding alkane. Furthermore, it is shown that the labelling reaction commences at relatively higher tritium atom energies as the size of the molecule is increased. The implications of these results for the formation of tracer amounts of tritium labelled hydrocarbons are discussed.

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