TITLE

Effect of aluminum metal surface on oxidation of iodide under gamma irradiation conditions

AUTHOR(S)
Hong, Sue; Jung, Sang-Hyuk; Yeon, Jei-Won
PUB. DATE
May 2016
SOURCE
Journal of Radioanalytical & Nuclear Chemistry;May2016, Vol. 308 Issue 2, p459
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The effects of aluminum surface on I oxidation under gamma irradiation were investigated. Without irradiation, only O oxidized I at pH < 2, and aluminum expedited the oxidation reaction. With irradiation, the radiolysis products from water and air oxidized I into $${{\text{I}}_{3}}^{ - } .$$ At pH < 2, O generated by water radiolysis additionally oxidized I. However, at pH > 6, the HO radiolysis product reduced $${{\text{I}}_{3}}^{ - }$$ into I. A smaller amount of $${{\text{I}}_{3}}^{ - }$$ was observed in pH 1.9 and 3.3 solutions in contact with aluminum under irradiation because oxidants preferentially oxidize aluminum rather than I. Moreover, for pH < 6.0, even less $${{\text{I}}_{3}}^{ - }$$ was formed by aluminum exposed to air because air radiolysis products also preferentially oxidized aluminum.
ACCESSION #
114436245

 

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