Formation of CH3I in a NaI and methyl alkyl ketone solution under gamma irradiation conditions
- 16 Downloads
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).
- 3.Ishigure K, Shiraishi H, Okuda H, Fujita N (1986) Effect of radiation on chemical forms of iodine species in relation to nuclear reactor accidents. Radiat Phys Chem 28:601–610Google Scholar
- 5.Kupferschmidt WCH, Evans GJ, Jobe DJ, Melnyk AJ, Portman R, Palson A, Sanipelli GG (1992) The advanced containment experiments (ACE) radioiodine test facility experimental program. AECL Research, Chalk RiverGoogle Scholar
- 12.Beahm EC, Lorenz RA, Weber CF (1992) Iodine evolution and pH control. Oak Ridge National Laboratory, Oak RidgeGoogle Scholar
- 13.Wren JC, Ball JM, Glowa GA (1999) Studies on the effects of organic-painted surfaces on pH and organic iodide formation. In: Iodine aspects of severe accident management workshop proceed, VantaaGoogle Scholar
- 15.Bosland L, Funke F, Girault N, Langrock G (2008) Paris project: radiolytic oxidation of molecular iodine in containment during a nuclear reactor severe accident. Part 1. Formation and destruction of air radiolysis products. Experimental results and modeling. Nucl Eng Des 238(3542):3550Google Scholar
- 23.Clément B, Cantrel L, Ducros G, Funke F, Herranz LE, Rydl A, Weber G, Wren JC (2007) State of the art report on iodine chemistry. Organization for Economic Co-Operation and Development, ParisGoogle Scholar
- 28.Guntay S (1996) Proceedings of the fourth CSNI workshop on the chemistry of iodine in reactor safety. PSI, Laboratory for Safety and Accident Research, Würenlingen, p 123Google Scholar
- 29.Sehgal BR (2011) Nuclear safety in light water reactors: severe accident phenomenology. Academic Press, Cambridge, p 505Google Scholar
- 30.Suppan P (2007) Chemistry and light. Royal Society of Chemistry, London, p 158Google Scholar
- 31.Hornback JM (2005) Organic chemistry. Cengage Learning, Boston, p 91Google Scholar