Chemical Safety Science, 2018, Volume 2, No 2, p. 96 — 105

 

Chemical hazard sources. Hazardous chemical substances

 

UDC 541.15                                                                                 Download PDF (RUS)

DOI: 10.25514/CHS.2018.2.14106

 

RADIOLYTIC DECOMPOSITION OF POLYCHLORINATED BIPHENYLS FROM SOVTOL TRANSFORMER OIL IN HEXANE AND ETHANOL SOLUTION

E. T. Abdullaev*, M. A. Gurbanov, and P. J. Jamalov

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

Received October 15, 2018

Published December 26, 2018

Abstract – The study presents the results of examining γ-radiation mediated decomposition kinetics of transformer oil Sovtol comprising highly toxic polychlorinated biphenyls (PCBs) in hexane (non-polar solvent) or ethanol (polar solvent) solutions. A series of specific features of kinetic transformation has been studied for PCBs from transformer oil at different content levels (initial concentrations of components are varied in the range from 0.86 to 192 mg/l) under γ-irradiation of model solutions irradiated with various doses up to 275 kGy. The decomposition degree of PCBs containing different initial amount of chlorine atoms is determined. Degradation mechanism discrepancies are discussed for PCBs molecules in hexane and ethanol which appear to have resulted from different polarity degree of solvents.

Keywords: polychlorinated biphenyls, Sovtol, hexane, ethanol, radiolysis, irradiation dose.

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