Radiolysis as a Factor Influencing Migration Behaviour of Iodine in the Geosphere

Abstract

Iodine /Radiation chemistry /GeochemistrySummary This paper provides a literature review of the studies which elucidate the influence of radiolysis on the migration of iodine in the geosphere in relation to safety assessments of underground disposal of 119 1 and lead as well to a better understanding of the geochemistry of this element. Radiation has been shown in a number of publications to have a considerable effect on the chemical behaviour of iodine in aqueous solutions, water-rock and similar heterogeneous systems. Some geochemical features of iodine in uranium deposits and in very old formation waters manifesting its radiolytic behaviour in nature are also discussed.

Autoradiolytic Decomposition of Reductant-free Sodium and 124I 123I-Iodide

“…The radioanalytic oxidation of ^^Br in aqueous solutions [14]; and the radiolytic decomposition of solutions [15,16] has been a subject of interest to other investigators. Conditions affecting the seif decomposition of a variety of labelled organic Compounds has been reviewed by Evans [17].…”