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Transport extraction for trace element separation and preconcentration

III. Polyurethane foam sorbent supported transport extraction

  • Original Papers
  • Inorganic Chemistry
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Summary

A new method of sorbent supported transport extraction based on the use of open-cell polyurethane foam sorbents in solvent sublation separation has been developed. The method has been shown to be effective for the separation and preconcentration of radioiodine and/or stable iodine from 41 of deionized, drinking (tap) and surface (river) waters using N-cetylpyridinium chloride as the cationic surfactant and N2 carrier gas as the bubbling medium. A transport extraction efficiency of about 94% was obtained in 60 to 90 min; a 300-fold preconcentration was found for radioiodine as measured by direct radioactivity counting. Both radioiodine and stable iodine can be back-extracted from the polyurethane foam support (e.g. into acetone with an efficiency of almost 95%).

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Authors and Affiliations

  1. Institute of Inorganic and Analytical Chemistry, Eötvös University, P.O. Box 123, H-1443, Budapest, Hungary

    S. Palágyi & T. Braun

Authors
  1. S. Palágyi
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  2. T. Braun
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Additional information

Part II: This journal (1993) 346:905

On leave from the Institute of Radioecology and Applied Nuclear Techniques, P.O. Box A-41, 04061 Košice, Slovakia

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Palágyi, S., Braun, T. Transport extraction for trace element separation and preconcentration. Fresenius J Anal Chem 348, 211–214 (1994). https://doi.org/10.1007/BF00325362

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  • DOI: https://doi.org/10.1007/BF00325362

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