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Abstract:Co 60 gamma ray radiolysis of aqueous oxalic acid solution (1 × 10 -2 M) was investigated within the dose range up to 80kGy. The value of pH increases from 2.0 to 4.0 and approximately 90% of oxalic acid and its derivatives are degraded at the dose of 80 kGy. Dissolved O 2 affects to the degradation of oxalic acid at the initial stage due to total consumption of O 2 at the dose of 2 kGy. Formation of CO 2 occurs at a higher rate at the initial stage until the dissolved O 2 is fully consumed. The kinetic model of oxalic acid degradation in aqueous solution under the gamma irradiation was tested. The suggested mechanism complies with the experimental data both of our own and of that reported earlier.

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