Abstract
The radioiodine I-131 was produced by neutron irradiation of TeO 2. The distribution of valency forms was studied, mainly as two groups: reduced forms containing I 2 + I − and oxidized forms containing IO 3 − + IO 4 −. Their separation was done by using ion-exchange technique. The effect of the length of irradiation on the distribution of those forms was found. The percentage of reduced forms increases with the increase of integral neutron flux. The same type of the change is found when TeO 2 was heated after the irradiations. The phenomenon is radically different from the corresponding results for solid iodates. Possible interaction with the target material was suggested, being primarily chemical in its nature, and depending on the isotopic relations of the components.
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