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Gas evolution in acetate-nitrate aqueous solutions in a wide pH range under the action of ionizing radiation

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Abstract

The influence of the initial pH value on the gas evolution from aqueous acetate-nitrate solutions under the action of ionizing γ-radiation was studied. With an increase in pH from 0.5 to 11.0, the total pressure of gases over the solution decreases by a factor of 4–5. The most noticeable decrease in the pressure is observed in the pH range 3–7. The major gaseous radiolysis products are CO2 and N2O, with H2 and CH4 formed to a considerably lesser extent (by a factor of 10). Other gases such as N2, O2, NO, CO at an absorbed dose of 0.2 MGy either were formed in extremely small amounts or were not detected at all. On the basis of the dependences of the CO2 solubility on temperature, pressure, ionic strength, and pH, an estimate was obtained for its total content in the system throughout the examined pH range.

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Authors and Affiliations

  1. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, block 4, Moscow, 119991, Russia

    B. G. Ershov & A. V. Gordeev

Authors
  1. B. G. Ershov
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  2. A. V. Gordeev
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Correspondence to A. V. Gordeev.

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Original Russian Text © B.G. Ershov, A.V. Gordeev, 2010, published in Radiokhimiya, 2010, Vol. 52, No. 3, pp. 285–288.

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Ershov, B.G., Gordeev, A.V. Gas evolution in acetate-nitrate aqueous solutions in a wide pH range under the action of ionizing radiation. Radiochemistry 52, 335–339 (2010). https://doi.org/10.1134/S1066362210030203

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  • DOI: https://doi.org/10.1134/S1066362210030203

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