• Login
    About WHOAS
    View Item 
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Geology and Geophysics (G&G)
    • View Item
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Geology and Geophysics (G&G)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of WHOASCommunities & CollectionsBy Issue DateAuthorsTitlesKeywordsThis CollectionBy Issue DateAuthorsTitlesKeywords

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Cleaning and pre-treatment procedures for biogenic and synthetic calcium carbonate powders for determination of elemental and boron isotopic compositions

    Thumbnail
    View/Open
    Author's manuscript (2.430Mb)
    Supplementary data (196.5Kb)
    Date
    2015-01
    Author
    Holcomb, Michael  Concept link
    DeCarlo, Thomas M.  Concept link
    Schoepf, Verena  Concept link
    Dissard, Delphine  Concept link
    Tanaka, Kiyoshi  Concept link
    McCulloch, Malcolm  Concept link
    Metadata
    Show full item record
    Citable URI
    https://hdl.handle.net/1912/7322
    As published
    https://doi.org/10.1016/j.chemgeo.2015.01.019
    Keyword
     Coral; Boron; Bleach; Cleaning; Peroxide; Aragonite 
    Abstract
    In preparing calcium carbonate samples for the measurement of various geochemical proxies, it is often necessary to remove contaminating phases while leaving the phase of interest altered as little as possible. Here we evaluate the effects of some common cleaning protocols (rinsing (H2O), bleach (~3% NaOCl), hydrogen peroxide (30%), sodium hydroxide (0.006 – 0.1 M NaOH), and acid leaching (0.05 N HNO3)) on the elemental (Li, B, Na, Mg, Sr, Ba, Pb, and U) and boron isotope composition of both biogenic and synthetic calcium carbonates formed in marine environments. In untreated samples, the presence of elevated concentrations of Na and Mg, the most abundant cations in seawater, can be reduced with minimal cleaning (e.g. rinsing). Cleaning protocols that cause partial dissolution are problematic, especially for samples that are compositionally heterogeneous because the remaining sample may be biased towards particular phases with distinctive elemental or isotopic compositions. We show that the use of either acid or unbuffered hydrogen peroxide can lead to partial dissolution which was associated with an increase in the U/Ca ratio of the remaining sample. Bleaching or rinsing with water did not result in significant sample dissolution, suggesting these cleaning techniques may be safely used on heterogeneous samples. Cleaning treatments, other than those resulting in significant dissolution of heterogeneous samples, had no significant effect on δ11B, suggesting that boron isotopes are generally robust to the effects of sample pre-treatment.
    Description
    Author Posting. © The Author(s), 2015. This is the author's version of the work. It is posted here by permission of Elsevier for personal use, not for redistribution. The definitive version was published in Chemical Geology 398 (2015): 11-21, doi:10.1016/j.chemgeo.2015.01.019.
    Collections
    • Geology and Geophysics (G&G)
    Suggested Citation
    Preprint: Holcomb, Michael, DeCarlo, Thomas M., Schoepf, Verena, Dissard, Delphine, Tanaka, Kiyoshi, McCulloch, Malcolm, "Cleaning and pre-treatment procedures for biogenic and synthetic calcium carbonate powders for determination of elemental and boron isotopic compositions", 2015-01, https://doi.org/10.1016/j.chemgeo.2015.01.019, https://hdl.handle.net/1912/7322
     

    Related items

    Showing items related by title, author, creator and subject.

    • Thumbnail

      Effects of eddy vorticity forcing on the mean state of the Kuroshio Extension 

      Delman, Andrew S.; McClean, Julie L.; Sprintall, Janet; Talley, Lynne D.; Yulaeva, Elena; Jayne, Steven R. (American Meteorological Society, 2015-05)
      Eddy–mean flow interactions along the Kuroshio Extension (KE) jet are investigated using a vorticity budget of a high-resolution ocean model simulation, averaged over a 13-yr period. The simulation explicitly resolves ...
    • Thumbnail

      Circulation and intrusions northeast of Taiwan : chasing and predicting uncertainty in the cold dome 

      Gawarkiewicz, Glen G.; Jan, Sen; Lermusiaux, Pierre F. J.; McClean, Julie L.; Centurioni, Luca R.; Taylor, Kevin; Cornuelle, Bruce D.; Duda, Timothy F.; Wang, Joe; Yang, Yiing-Jang; Sanford, Thomas B.; Lien, Ren-Chieh; Lee, Craig M.; Lee, Ming-An; Leslie, Wayne; Haley, Patrick J.; Niiler, Pearn P.; Gopalakrishnan, Ganesh; Velez-Belchi, Pedro; Lee, Dong-Kyu; Kim, Yoo Yin (The Oceanography Society, 2011-12)
      An important element of present oceanographic research is the assessment and quantification of uncertainty. These studies are challenging in the coastal ocean due to the wide variety of physical processes occurring on a ...
    • Thumbnail

      Structure and evolution of the cold dome off northeastern Taiwan : a numerical study 

      Gopalakrishnan, Ganesh; Cornuelle, Bruce D.; Gawarkiewicz, Glen G.; McClean, Julie L. (The Oceanography Society, 2013-03)
      Numerous observational and modeling studies of ocean circulation surrounding Taiwan have reported occurrences of cold water and doming of isotherms (called the cold dome) that result in the formation of coastal upwelling ...
    All Items in WHOAS are protected by original copyright, with all rights reserved, unless otherwise indicated. WHOAS also supports the use of the Creative Commons licenses for original content.
    A service of the MBLWHOI Library | About WHOAS
    Contact Us | Send Feedback | Privacy Policy
    Core Trust Logo