Synthesis and characterization of an N-(2-hydroxyethyl)-ethylenediaminetriacetic acid resin

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A chelating ion-exchange resin with N-(2-hydroxyethyl)ethylene-diaminetriacetic acid (HEDTA) used as the ligand chemically bonded to XAD-4 by an ester linkage, HEDTA-4, was synthesized. It is stable under normal experimental conditions with the liquid chromatograph. The structure of the resin was confirmed by an infrared spectrum, and by potentiometric titrations. The capacity of the resin was also obtained by potentiometric titration and by a nitrogen analysis. The resin was used to pack a column of 5 mm internal diameter and 5 cm long. The effect of pH on the retention of different metal ions on the resin was studied. It was … continued below

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34 pages

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Lai, Y. F. October 1, 1977.

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This thesis or dissertation is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 116 times. More information about this document can be viewed below.

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  • Ames Laboratory
    Publisher Info: Ames Lab., Iowa (USA)
    Place of Publication: Iowa

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A chelating ion-exchange resin with N-(2-hydroxyethyl)ethylene-diaminetriacetic acid (HEDTA) used as the ligand chemically bonded to XAD-4 by an ester linkage, HEDTA-4, was synthesized. It is stable under normal experimental conditions with the liquid chromatograph. The structure of the resin was confirmed by an infrared spectrum, and by potentiometric titrations. The capacity of the resin was also obtained by potentiometric titration and by a nitrogen analysis. The resin was used to pack a column of 5 mm internal diameter and 5 cm long. The effect of pH on the retention of different metal ions on the resin was studied. It was found that the resin was most selective for chromium(III), copper(II), lead(II), mercury(II), uranium(VI), zirconium(IV) and zinc(II) at a pH of less than 3. Furthermore, the resin proves to be functioning with a chelating mechanism rather than ion-exchange, and it can concentrate trace metal ions in the presence of a large excess of calcium and magnesium. This makes the resin potentially useful for purifying and analyzing drinking water.

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34 pages

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Dep. NTIS, PC A03/MF A01.

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  • Other Information: Thesis

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Office of Scientific & Technical Information Technical Reports

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  • October 1, 1977

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  • Feb. 4, 2018, 10:51 a.m.

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  • Feb. 12, 2021, 9:37 p.m.

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Lai, Y. F. Synthesis and characterization of an N-(2-hydroxyethyl)-ethylenediaminetriacetic acid resin, thesis or dissertation, October 1, 1977; Iowa. (https://digital.library.unt.edu/ark:/67531/metadc1069597/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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