Oxidation of Ferrous Ions in Aqueous Solutions by Cobalt-60 Gamma Rays. III. The Effect of Cupric Ion in Air-free Acidic Solutions

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概要

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• The yield of ferric ions in the air-free ferrous acidic solutions by cobalt-60 gamma rays is reduced in the presence of cupric ion due to their reduction by the hydrogen atoms. The decrement depends on the composition of the solutions. That is, the apparent ratio of this reduction rate to the oxidation rate of the ferrous ions, estimated directly from the observed ferric yield by Eq. iiia increases with the decrease in acidity. On the other hand, the similar ratio for the reduction rate of ferric ions apparently varies according to the composition of the solutions. However, when these apparent ratios are analyzed by a fine composition of the solutions or reduced to the reaction rate for the fine species in solutions, the intrinsic ratios of the reduction rate of the free ferric and cupric ions to the oxidation rate of the free ferrous ions, by the hydrogen atoms, are 7 and 270 respectively and are independent of the composition of the solutions. On the other hand, the direct capture reaction of the cupric ions with the thermerized electrons is effective, in addition to the above reduction reaction with the hydrogen atoms, in the cupric solutions more concentrated than 0.004 M.

• 社団法人 日本化学会の論文

著者

• Suzuki Nobutake

  Japan Atomic Energy Research Institute

• Hotta H.

  Japan Atomic Energy Research Institute

• Ohno Shin-ichi

  Japan Atomic Energy Research Institute

• Hotta Hiroshi

  Japan Atomic Energy Research Institute

関連論文

• Oxidation of Ferrous Ions in Aqueous Solutions by Cobalt-60 Gamma Rays. III. The Effect of Cupric Ion in Air-free Acidic Solutions
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