Gamma radiation effects on potassium pertechnetate in carbonate media

K Ben Said; Yann Seimbille; M Fattahi; C Houee-Levin; JC Abbe

doi:10.1016/S0969-8043(00)00162-7

Gamma radiation effects on potassium pertechnetate in carbonate media

K Ben Said, Yann Seimbille, M Fattahi, C Houee-Levin, JC Abbe

Research output: Contribution to journal › Article › Academic › peer-review

13 Citations (Web of Science)

Abstract

Gamma radiation effects on the stability of the oxidation state of radioelements and diffusion within the framework of nuclear waste repositories are often neglected, although it may influence physicochemical processes and thus transfer to biosphere and geosphere. This knowledge is essential to model transport phenomena. This study reports on effects of gamma irradiation on technetium in carbonate media, which is representative of natural systems. Depending on media compositions, the gamma irradiation on pertechnetate leads to formation of Tc(IV) only in the absence of carbonate. CO^·-₃ radicals are able to re-oxidise technetium intermediate oxidation states to the +7 state.

Original language	English
Pages (from-to)	45-51
Number of pages	7
Journal	Applied Radiation and Isotopes
Volume	54
Issue number	1
DOIs	https://doi.org/10.1016/S0969-8043(00)00162-7
Publication status	Published - Jan 2001
Externally published	Yes

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AU - Abbe, JC

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AB - Gamma radiation effects on the stability of the oxidation state of radioelements and diffusion within the framework of nuclear waste repositories are often neglected, although it may influence physicochemical processes and thus transfer to biosphere and geosphere. This knowledge is essential to model transport phenomena. This study reports on effects of gamma irradiation on technetium in carbonate media, which is representative of natural systems. Depending on media compositions, the gamma irradiation on pertechnetate leads to formation of Tc(IV) only in the absence of carbonate. CO·-3 radicals are able to re-oxidise technetium intermediate oxidation states to the +7 state.

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Gamma radiation effects on potassium pertechnetate in carbonate media

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