On the kinetic treatment of photochemically induced isotopic exchange

A. Levy, D. Meyerstein, M. Ottolenghi

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2 Scopus citations


A kinetic treatment describing the time dependence of the exchanged fraction (F) is presented for the photochemically-induced isotopic exchange process: AX+BX* → hvAX*+BX when complicated by a net change in the concentration of AX due to the side reaction: AX → hvBX. The kinetic equations are numerically integrated and applied to the specific case in which AX ≡ iodobenzene and BX* is radioactive iodine (I131I). The treatment accounts quantitatively for the experimental F vs. time plots. It also leads to the evaluation of the relative rate constants of the phenyl radical (Ph·) scavenging processes: Ph· + I2→PhI+I. and Ph·+S→scavenging products where S is benzene, toluene or molecular oxygen.

Original languageEnglish
Pages (from-to)9-14
Number of pages6
JournalApplied Radiation and Isotopes
Issue number1
StatePublished - 1 Jan 1974
Externally publishedYes

ASJC Scopus subject areas

  • Radiation
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging


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