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Fabrication and application of a continuously regenerated cationic impurity removal device for ion chromatography.
- Source :
-
Journal of chromatography. A [J Chromatogr A] 2024 May 10; Vol. 1722, pp. 464904. Date of Electronic Publication: 2024 Apr 10. - Publication Year :
- 2024
-
Abstract
- A continuously regenerated cationic impurity removal device (CR-CRD) has been fabricated and applied for ion chromatography (IC). The removal of cationic impurities is realized by electrodialytically replacing the cationic impurities with hydronium ions. The device is configured in a sandwich structure and the central eluent channel is respectively isolated from both electrodes by stacked cation exchange membranes and a bipolar membrane (BPM) plus stacked anion exchange membranes. The eluent channel is packed with cation exchange resins in hydronium form and their continuous regeneration can be achieved by electrodialysis. A desirable feature of the device is gas-free, and no degasser is required. It showed sufficient ability to remove cationic impurities, as indicated by > 99.9 % removal of 10 mL of 1 mM LiOH solution injected (∼10 μmol) or continuous removal of 1 mM LiOH solution at the flow rate of 1 mL/min (1 μmol/min). A useful application was for sample pretreatment in nuclear power industry, by eliminating strong matrix interference of the sample containing LiOH (1 mM) and boric acid (2000 mg/L) with trace anion analysis.<br />Competing Interests: Declaration of competing interest The authors declare no competing financial interest.<br /> (Copyright © 2024 Elsevier B.V. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-3778
- Volume :
- 1722
- Database :
- MEDLINE
- Journal :
- Journal of chromatography. A
- Publication Type :
- Academic Journal
- Accession number :
- 38626539
- Full Text :
- https://doi.org/10.1016/j.chroma.2024.464904