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  3. Use of CYCLAM to probe the influence of surfaces on ligand exchange
Title

Use of CYCLAM to probe the influence of surfaces on ligand exchange

    Item Description
    Limited Access
    The author(s) chose to restrict access to this thesis to current Whitman students, faculty, and staff. Please log in to view it.
    Linked Agent
    Creator (cre): Hinkle, Samuel James
    Department (dpt): Whitman College. Chemistry - Environmental Studies
    Advisor (adv): Boland, Nate
    Date
    May 13, 2015
    Graduation Year
    2015
    Abstract

    Ligand exchange reactions greatly influence the bioavailability, fate, and transport of metal ions and pollutants in natural aqueous systems. Surfaces in these systems have been shown to influence these reactions, but the pathway by which this influence occurs is not well known. This research employs the macrocyclic ligand CYCLAM and its linear analog, which have very different interactions with surfaces, to probe the mechanism of influence. The ligand exchange reaction of Ni(II) from CYCLAM or its linear analog to CDTA was monitored using capillary zone electrophoresis and UV-vis detection. A kinetic model for the NiCYCLAM-CDTA exchange system is proposed and tested in the absence of a metal oxide surface. Further tests are needed to draw conclusions about the mechanism of surface influence on ligand exchange.

    Subject
    Soils -- Nickel content
    Chelating Agents
    Capillary electrophoresis
    Ligands (Biochemistry) -- Analysis
    Surface chemistry -- Experiments
    Metal ions -- Analysis
    Pollutants
    Chemical reactions
    Science
    Environmental sciences
    Academic theses
    Whitman College 2015 -- Dissertation collection -- Chemistry-Environmental Studies
    Genre
    Theses
    Extent
    45 pages
    Permanent URL
    http://works.whitman.edu/20151125
    Rights
    http://rightsstatements.org/vocab/InC/1.0/
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