Chemical Safety Science, 2018, Volume 2, No 2, p. 112 -118


Chemical hazard sources. Hazardous chemical substances


UDC 541.15                                                                                   Download PDF (RUS)

DOI: 10.25514/CHS.2018.2.14108




Z. I. Iskenderova* and M. A. Gurbanov

Institute of Radiation Problems, National Academy of Sciences of Azerbaijan, Baku, Republic of Azerbaijan

Received September 20, 2018

Published December 26, 2018

Abstract – The study examines an effect of γ-radiation on changes in pH, chemical oxygen consumption values, formation of degradation products (hydrogen peroxide and carbon dioxide), as well as UV absorption spectra resulting from radiolysis of two-phase systems transformer oil-water, given that the transformer oil contained 5–40 ppm of 1,2,4-trichlorobenzene (TCB). An increase in the initial concentration of TCB is found to induce an increase in radiation chemical yield value for hydrogen peroxide (4.9 molecules/100 eV). In contrast, an increase in the concentration of TCB in oil results in a decrease in the yield of CO2 from 0.97 to 0.11 molecules/100 eV in the TCB concentration range of 5–40 ppm. Consequently, an increase in the absorbed dose provides an increase in the optical density values in UV spectra from 0.9 to ~3.2 units during radiolysis of the system containing 5 ppm of TCB. Further increase in dose up to 68.4 kGy leads to a decrease in optical density to ~1.3. In general, a significant degradation of 1,2,4-trichlorobenzene molecules is observed during radiolysis of two-phase systems consisting of transformer oil and water.

Keywords: 1,2,4-trichlorobenzene, γ-radiation, degradation, UV absorption spectra, radiation chemical yield.


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