Radiation-Chemical Transformations of Ethylene Glycol and Its Deuterated Derivative
in Deaerated Aqueous Solutions

O. V. Urbanovich; Урбанович О. В.; A. I. Davydenko; Давыденко А. И.; R. L. Sverdlov; Свердлов Р. Л.; A. V. Bekish; Бекиш А. В.; S. B. Lastovskii; Ластовский С. Б.; E. V. Tochilin; Точилин Е. В.

doi:10.31857/S0023119323050133

Radiation-Chemical Transformations of Ethylene Glycol and Its Deuterated Derivative in Deaerated Aqueous Solutions

作者: Urbanovich O.V.¹, Davydenko A.I.¹, Sverdlov R.L.¹^,2, Bekish A.V.³, Lastovskii S.B.⁴, Tochilin E.V.⁴
隶属关系:
1. Belarusian State University
2. Research Institute for Physicochemical Problems, Belarusian State Universit
3. Institute of Physical and Organic Chemistry, National Academy of Sciences of Belarus
4. Scientific and Practical Center for Materials Science, National Academy of Sciences of Belarus
期: 卷 57, 编号 5 (2023)
页面: 363-368
栏目: RADIATION CHEMISTRY
URL: https://edgccjournal.org/0023-1193/article/view/661474
DOI: https://doi.org/10.31857/S0023119323050133
EDN: https://elibrary.ru/LWDXEF
ID: 661474

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详细

This study is devoted to the effect of complete deuteration of the ethylene glycol carbon skeleton on the formation of its radiation-induced free-radical transformations products in deaerated aqueous solutions at pH 7.00 ± 0.10 and a dose rate of 0.064 ± 0.002 Gy/s. It has been established that the chain process of fragmentation of carbon-centered ethylene glycol radicals (∙CH(OH)CH2OH) plays an important role in the formation of acetaldehyde. The replacement of protium atoms located at carbon atoms by deuterium decreased the radiation-chemical yield of acetaldehyde in aqueous 1 M solutions of diols by a factor of 8. The results of this study indicate that the use of deuterium exchange at the carbon skeleton of organic molecules is a promising way for increasing their resistance to radiation-induced free radical fragmentation processes.

关键词

radiolysis, ethylene glycol, radical, free radical fragmentation, H–D isotope effect

参考

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