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Influence of chelating agents in eluent on the separation factor of lithium isotopes

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Abstract

The influence of chelating agents on the separation factor, α, of lithium isotopes separation was studied by ion exchange elution chromatography. Eluents contained the chelating agent having different number of coordination sites. The chelating agents used in eluent were Na-glycine (Na−Gly), 2Na-iminodiacetic acid (2Na-IDA), 3Na-nitrilotriacetic acid (3Na-NTA), and 4Na-ethylenediaminetetraacetic acid (4Na-EDTA). The ion exchanger was Dowex 50W-X8, sulfonic acid type, sodium form. As a result,6Li was enriched in resin phase, and7Li was in solution phase. The separation factor, α, was gradually increased with increasing number of coordination site (α=1.0022–1.0038) at the same distribution coefficient and with increasing distribution coefficients (α=1.0017–1.0026) at the same concentration of chelating agents.

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Authors and Affiliations

  1. Department of Chemistry, Physical Chemistry Laboratory, College of Natural Science, The Chungbuk National University, 360-763, Cheongju, (Republic of Korea)

    D. W. Kim & J. H. Jung

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  1. D. W. Kim
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  2. J. H. Jung
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Kim, D.W., Jung, J.H. Influence of chelating agents in eluent on the separation factor of lithium isotopes. Journal of Radioanalytical and Nuclear Chemistry, Articles 130, 63–70 (1989). https://doi.org/10.1007/BF02037701

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  • DOI: https://doi.org/10.1007/BF02037701

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