The effect of aliphatic alcohol additives on the radiolytic degradation of TODGA in Isopar-M
| Autor: | Yulia V. Nikitina, Elena Belova, Nikolay V. Yudin, Alexander V. Ponomarev |
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| Rok vydání: | 2020 |
| Předmět: |
Health
Toxicology and Mutagenesis Gas evolution reaction Radical Diglycolic acid Inorganic chemistry Public Health Environmental and Occupational Health Pollution Decomposition Analytical Chemistry chemistry.chemical_compound Nuclear Energy and Engineering chemistry Yield (chemistry) Radiolysis Alkoxy group Degradation (geology) Radiology Nuclear Medicine and imaging Spectroscopy |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 326:1185-1192 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | The radiolysis of solutions of TODGA (N,N,N′,N′-tetra-n-octylamide of diglycolic acid) in mixtures of Isopar-M (iso-paraffins C13–C14) with n-nonanol or n-decanol at 500 kGy leads to predominant decomposition of TODGA. The radiation-chemical yield of this process is 0.4–0.5 μmol J−1. The main products of the direct effect of ionizing radiation on TODGA are N,N-dioctylacetamide and 2-hydroxy-N,N-dioctylacetamide. The indirect effect of ionizing radiation is mainly due to reactions with alkoxy radicals and leads to the breaking of the C–N and C–C bonds in the α-position relative to the carbonyl group. An increase in the alcohol content in the solution results in the increase of the variety of radiolytic products, in the enhancement of gas evolution, and in the increase in the yield of TODGA decomposition. The replacement of n-decanol with n-nonanol does not significantly affect the radiolytic stability of the solutions. |
| Databáze: | OpenAIRE |
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