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Cation exchange properties of crown ether-phosphotungstic acid precipitates

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Abstract

Precipitate formation between phosphotungstic acid and crown ethers is a general phenomenon, producing solids with selective ion exchange behavior for the alkali metal ions. Distribution coefficients for Li+, Na+, K+, and Cs+ were measured for a series of these precipitates with different crown ethers. The sorption data are more complicated than for the corresponding phosphomolybdates and indicate a variability in the number of exchangeable sites with H+ and M+ concentration. The crown ether used markedly affects the cation selectivity of the phosphotungstate precipitates.

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Authors and Affiliations

  1. Department of Chemistry, North Carolina State University, 27695, Raleigh, North Carolina, (USA)

    K. K. Luk, M. L. Miles & L. H. Bowen

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  1. K. K. Luk
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  2. M. L. Miles
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  3. L. H. Bowen
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Luk, K.K., Miles, M.L. & Bowen, L.H. Cation exchange properties of crown ether-phosphotungstic acid precipitates. Journal of Radioanalytical and Nuclear Chemistry, Articles 82, 255–262 (1984). https://doi.org/10.1007/BF02037047

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  • DOI: https://doi.org/10.1007/BF02037047

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