On the kinetic treatment of photochemically induced isotopic exchange

A. Levy; D. Meyerstein; M. Ottolenghi

doi:10.1016/0020-708X(74)90047-7

On the kinetic treatment of photochemically induced isotopic exchange

A. Levy, D. Meyerstein, M. Ottolenghi

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Abstract

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 language	English
Pages (from-to)	9-14
Number of pages	6
Journal	Applied Radiation and Isotopes
Volume	25
Issue number	1
DOIs	https://doi.org/10.1016/0020-708X(74)90047-7
State	Published - 1 Jan 1974
Externally published	Yes

ASJC Scopus subject areas

Radiation
Nuclear Energy and Engineering
Radiology Nuclear Medicine and imaging

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abstract = "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.",

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AU - Levy, A.

AU - Meyerstein, D.

AU - Ottolenghi, M.

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N2 - 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.

AB - 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.

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DO - 10.1016/0020-708X(74)90047-7

M3 - Article

AN - SCOPUS:0015988866

SN - 0020-708X

VL - 25

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EP - 14

JO - Applied Radiation and Isotopes

JF - Applied Radiation and Isotopes

IS - 1

ER -

On the kinetic treatment of photochemically induced isotopic exchange

Abstract

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