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Formation of CH3I in a NaI and methyl alkyl ketone solution under gamma irradiation conditions

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Abstract

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.

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Acknowledgements

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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Authors and Affiliations

  1. Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong-gu, Daejeon, 34057, Republic of Korea

    Minsik Kim, TaeJun Kim & Jei-Won Yeon

  2. Radiochemistry and Nuclear Nonproliferation, University of Science and Technology, Gajung-ro 217, Yuseong-gu, Daejeon, 34113, Republic of Korea

    Minsik Kim & TaeJun Kim

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  1. Minsik Kim
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Correspondence to Jei-Won Yeon.

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Kim, M., Kim, T. & Yeon, JW. Formation of CH3I in a NaI and methyl alkyl ketone solution under gamma irradiation conditions. J Radioanal Nucl Chem 316, 1329–1335 (2018). https://doi.org/10.1007/s10967-018-5852-y

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  • DOI: https://doi.org/10.1007/s10967-018-5852-y

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