Formation of CH3I in a NaI and methyl alkyl ketone solution under gamma irradiation conditions
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We investigated the effects of concentrations of NaI and methyl alkyl ketone on the formation of methyl iodide under gamma irradiation conditions. Without irradiation, the formation of methyl iodide does not occur. For the formation of methyl iodide, the solution pH should be brought to lower than 6 by radiolytic decomposition of ketones and air. At a pH below 6, the iodide was oxidized into iodine, allowing for the formation of CH3I from the reaction of iodine and the CH3 radical. When the concentrations of NaI and methyl alkyl ketone were similar, the concentration of methyl iodide was generally at its highest, and as the gamma dose increased, the concentration of methyl iodide increased.
KeywordsNaI Methyl alkyl ketone Gamma irradiation Methyl iodide pH MIBK MEK
This work was supported by the Nuclear Research and Development Program through the National Research Foundation of Korea and funded by the Ministry of Science and ICT, Republic of Korea (No. 2017M2A8A4015281).
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