Four mechanisms were considered as possible causes of the loss in resolution for a Dionex CG2 ion chromatography resin: 1) presence of inorganic ions strongly bound to the active sites; 2) adsorption of organic species; 3) physical alterations; and 4) chemical alterations. The instrumental analyses used to gather data were ICP, FT-IR, SEM, solid C-13 NMR and IC. Based on the results, no metal ions are bound to the resin, no organic species are held onto the resin, and no physical change was observable. The cause for the loss of resolution is a strong reduction in the number of active sites in the resin as confirmed by elemental analysis for the sulfur in the sulfonic acid present in the active sites.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc798197 |
| Date | 05 1900 |
| Creators | Galindo, Irma C. (Irma Concepcion) |
| Publisher | North Texas State University |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | v, 30 leaves : ill., Text |
| Rights | Public, Galindo, Irma C. (Irma Concepcion), Copyright, Copyright is held by the author, unless otherwise noted. All rights |
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