Date of Award
Doctor of Philosophy
Various organic acids are tested for use as eluents in single-column ion chromatography. Factors affecting their selectivity, sensitivity, and eluting strength are discussed. Coated anion exchange resins suitable for anion chromatography are also prepared. Their convenience, flexibility, and practical use as anion exchangers are demonstrated;Theories on ion exchange selectivity with high capacity ion exchange resins are reviewed. Interactions emphasized by each theory are pointed out as well as possible problems that could arise when applying these theories to explain selectivity variations found in anion chromatography. Previous studies in anion chroma- tography which exhibited selectivity variations are also reviewed and explanations for the variations are given. Parameters of the chromatographic system that could affect the selectivity of the sys- tem for various anions are investigated. Then, selectivity variations are explained in terms of interactions between components of the mobile phase and the stationary phase;Derivatization techniques necessary for species that are difficult or impossible to detect directly by anion chromatography are investigated. Methods are described for derivatizing cyanide and;aldehydes in aqueous solution and then determining them by anion chromatography; ('1)DOE Report IS-T-1169. This work was performed under Contract W-7405-eng-82 with the Department of Energy.
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Dean Larry DuVal
DuVal, Dean Larry, "Selectivity variations in anion chromatography " (1985). Retrospective Theses and Dissertations. 7843.