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    The role of zinc ions in calcium oxalate monohydrate crystallization

    81020.pdf (13.51Mb)
    Access Status
    Open access
    Authors
    Barker, Timothy
    Boon, Matthew
    Jones, Franca
    Date
    2020
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Barker, T. and Boon, M. and Jones, F. 2020. The role of zinc ions in calcium oxalate monohydrate crystallization. Journal of Crystal Growth. 546: Article No.125777.
    Source Title
    Journal of Crystal Growth
    DOI
    10.1016/j.jcrysgro.2020.125777
    ISSN
    0022-0248
    Faculty
    Faculty of Science and Engineering
    School
    School of Molecular and Life Sciences (MLS)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/LE130100053
    http://purl.org/au-research/grants/arc/LE140100150
    http://purl.org/au-research/grants/arc/LE0775551
    URI
    http://hdl.handle.net/20.500.11937/80958
    Collection
    • Curtin Research Publications
    Abstract

    © 2020 Elsevier B.V. Cystallization of calcium oxalate monohydrate was investigated in the presence of various organic molecules in combination with zinc ions. This work looked at the impacts at physiological pHs (6–8) and temperature (37 °C). It was found that the number of carboxylate and hydroxyl groups was critical in determining the degree of inhibition. This inhibition was found to be mainly due to the ability of the organics to chelate with calcium ions when zinc ions are not present. Zinc ions were found to chelate with oxalate ions leading to lower nucleation rates, but this is not strictly inhibition but a lowering of the supersaturation due to lowering of the activity of the oxalate. Organics have variable impact depending on whether the zinc ions or calcium ions preferentially chelate with the organic.

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