Transport extraction for trace element separation and preconcentration - III. Polyurethane foam sorbent supported transport extraction

S. Palágyi, T. Braun

Research output: Contribution to journalArticle

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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%).

Original languageEnglish
Pages (from-to)211-214
Number of pages4
JournalFresenius' Journal of Analytical Chemistry
Issue number3
Publication statusPublished - Mar 1 1994


ASJC Scopus subject areas

  • Biochemistry

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