Summary
Retention behavior of anions and cations on anion-exchangers modified with dextran sulfate has been investigated. Retention of anions was remarkably reduced by the modification, and the retention factor decreased with decreasing eluent concentration when sodium sulfate was used as the eluent. Cations were also retained on the modified stationary phase, and alkali and alkaline-earth metal ions were separated using copper sulfate or tris(2,2′-bipyridyl)ruthenium chloride as eluent. The size of the dextran sulfate strongly affected the retention behavior of analyte ions.
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Takeuchi, T., Safni, Miwa, T. et al. Ion chromatography using anion-exchangers modified with dextran sulfate. Chromatographia 50, 70–74 (1999). https://doi.org/10.1007/BF02493620
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DOI: https://doi.org/10.1007/BF02493620