| 초록 |
The chemical behavior of iodine has been studied because iodine has various oxidation states. In particular, iodine species can be oxidized or reduced under gamma irradiation. In this work, I investigated the effects of the water radiolysis on the formation of molecular iodine and methyl iodide. First, the effect of gamma irradiation was studied on the pH change of pure water. In general, the water decomposition does not change the solution pH. However, the pH can be changed when some chemicals are present in the irradiated solutions. Second, I examined the oxidation of iodide by hydroxyl radical and hydrogen peroxide. The roles of hydrogen peroxide were analyzed electrochemically for the oxidation of iodide ion and the reduction of iodine. Third, I studied on the formation of methyl iodide under gamma irradiation. The methyl iodide was observed at the pH below 6.4, but it was found that the low pH was not a sufficient condition for the formation of methyl iodide. |
