Affordable Access

Publisher Website

Chemical effects of gamma radiation on iodine in aqueous solutions

Authors
Journal
Journal of Inorganic and Nuclear Chemistry
0022-1902
Publisher
Elsevier
Publication Date
Volume
42
Issue
8
Identifiers
DOI: 10.1016/0022-1902(80)80417-9

Abstract

Abstract Gamma radiolysis of iodine ions in aqueous solutions was investigated under high intensity gamma-rays (at 4.5 × 10 6 R/h) from 60Co at ambient temperature. The yields of radiation induced oxidation products, I 2 and IO 3 − were measured as a function of radiation dose, I − concentration and solution pH. The I 2 yield increased with increasing I − concentration and decreasing pH. The G(I 2) value is determined to be 0.2 in a pH 2 solution containing 10 −3 MI −. At an iodide concentration of 10 −5 M or less, the formation of I 2 diminished, whereas IO 3 − was found. Iodide was converted nearly quantitatively to IO 3 − hwern the initial I − concentration was 10 −6 M or less with a pH range from 3 to 9. The maximum G(IO 3 −) value is determined to be 0.001 in a pH 8 solution. A mechanism is proposed to explain the formation of IO 3 − under the experimental condition. This mechanism consists of successive oxidations of iodine with HIO as a primary intermediate. Experimental data have demonstrated that the formation of iodate in the BWR primary coolant is the result of radiation effects on radioniodine in the coolant. The mechanism would predict that the iodine in the BWR steam phase is probably the result of distillation of the volatile HIO intermediate.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Effects of gamma radiation on aqueous solutions of...

on Bulletin of Environmental Cont... May 1974

Effects of gamma radiation on aqueous solutions of...

on Bulletin of Environmental Cont... June 1977

Chemical effects of UV radiation on aqueous soluti...

on Polymer Photochemistry Jan 01, 1985

The chemical action of gamma radiation on aqueous...

on The International Journal of A... Jan 01, 1959
More articles like this..