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Rapid and efficient separation of strontium from liquid milk with a cation exchange resin Dowex 50WX8 treated with cryptand 222

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Abstract

The presence of cryptand 222 on the strongly acidic cation exchange resin Dowex 50WX8 (D) considerably increases its ability to remove strontium (Sr) from liquid milk. Dowex resin treated with cryptand (D/222) sorbs more than 95% of the Sr in milk at pH 5.2 and 22 °C after 4 hours contact in a batch process with a resin to milk volume ratio of 1∶50. Hot (90 °C) 6M hydrochloric acid elutes Sr quantitatively but rather unspecifically from the resin. The isolation of Sr from this eluate by chromatography with the commercially available Sr·Spec Resin® is described. The usefulness of this technique for the rapid, routine determination of90Sr in liquid milk is discussed.

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Authors and Affiliations

  1. Institute for Chemistry and Physics, Federal Dairy Research Centre, Hermann-Weigmann-Straße 1, D-24103, Kiel, Germany

    D. Tait, G. Haase & A. Wiechen

Authors
  1. D. Tait
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  2. G. Haase
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  3. A. Wiechen
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Tait, D., Haase, G. & Wiechen, A. Rapid and efficient separation of strontium from liquid milk with a cation exchange resin Dowex 50WX8 treated with cryptand 222. J Radioanal Nucl Chem 226, 225–228 (1997). https://doi.org/10.1007/BF02063652

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  • DOI: https://doi.org/10.1007/BF02063652

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