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Solvent extraction behaviors of Americium(III) and Europium(III) using 2-hydroxy-2-methyloctanoic acid and 2-hydroxy-2-trifluoromethyloctanoic acid

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Abstract

Solvent extraction behaviors of Am(III) and Eu(III) using 2-hydroxy-2-methyloctanoic acid (Hhmo) and 2-hydroxy-2-trifluoromethyloctanoic acid (Hhfo) were investigated in aqueous acetic acid/1-octanol at 20 °C. In both cases, distribution ratios (D) of the organic/aqueous phases increased with increasing pH of the aqueous solution. The D Am(Hhfo) and D Eu(Hhfo) values were found to be much higher than those for D Am(Hhmo) and D Eu(Hhmo), respectively, under similar pH conditions. The maximum separation factor of D Eu(Hhfo)/D Am(Hhfo) was 2.31 ±  0.800.70 at pH 4.29. The differences between D Am(Hhmo) and D Eu(Hhmo) values were relatively small in the pH region under consideration.

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Authors and Affiliations

  1. Radioisotope Research Center, Osaka University, Suita, 565-0871, Japan

    Takashi Yoshimura

  2. Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, 560-0043, Japan

    Moe Seike, Mai Eguchi & Atsushi Shinohara

Authors
  1. Moe Seike
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  2. Mai Eguchi
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  3. Atsushi Shinohara
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  4. Takashi Yoshimura
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Correspondence to Takashi Yoshimura.

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Seike, M., Eguchi, M., Shinohara, A. et al. Solvent extraction behaviors of Americium(III) and Europium(III) using 2-hydroxy-2-methyloctanoic acid and 2-hydroxy-2-trifluoromethyloctanoic acid. J Radioanal Nucl Chem 303, 1413–1416 (2015). https://doi.org/10.1007/s10967-014-3482-6

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  • DOI: https://doi.org/10.1007/s10967-014-3482-6

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