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Anion-Exchange Nanospheres as Titration Reagents for Anionic Analytes

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    Anion-Exchange Nanospheres as Titration Reagents for Anionic Analytes
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    Department of Inorganic and Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211 Geneva, Switzerland
    *E-mail: [email protected]
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    Analytical Chemistry

    Cite this: Anal. Chem. 2015, 87, 16, 8347–8352
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    https://doi.org/10.1021/acs.analchem.5b01530
    Published July 22, 2015
    Copyright © 2015 American Chemical Society
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    Abstract

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    We present here anion-exchange nanospheres as novel titration reagents for anions. The nanospheres contain a lipophilic cation for which the counterion is initially Cl–. Ion exchange takes place between Cl– in the nanospheres and a more lipophilic anion in the sample, such as ClO4– and NO3–. Consecutive titration in the same sample solution for ClO4– and NO3– were demonstrated. As an application, the concentration of NO3– in spinach was successfully determined using this method.

    Copyright © 2015 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.analchem.5b01530.

    • Equations for (1) the relationship between the volume of titrant and EMF and (2) the consecutive titration of two anions; seven figures showing potentiometric responses, selectivities, and time traces (PDF)

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    This article is cited by 10 publications.

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    Analytical Chemistry

    Cite this: Anal. Chem. 2015, 87, 16, 8347–8352
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.analchem.5b01530
    Published July 22, 2015
    Copyright © 2015 American Chemical Society
    Request reuse permissions

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