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Simplified Method for the In Situ Collection and Laboratory Analysis of Cosmogenic Tracers (Sulfur-35 and Sodium-22) to Determine Residence Time Distributions and Water Ages

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Download Hi-Res ImageDownload to MS-PowerPointCite This:Anal. Chem. 2021, 93, 10, 4472-4478
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    Simplified Method for the In Situ Collection and Laboratory Analysis of Cosmogenic Tracers (Sulfur-35 and Sodium-22) to Determine Residence Time Distributions and Water Ages
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    • Amanda L. Deinhart*
      Amanda L. Deinhart
      Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
      *Email: [email protected]
      More by Amanda L. Deinhart
      Orcidhttp://orcid.org/0000-0001-5886-7959
    • Richard K. Bibby
      Richard K. Bibby
      Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
      More by Richard K. Bibby
    • Ate Visser
      Ate Visser
      Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
      More by Ate Visser
    • Melissa Thaw
      Melissa Thaw
      School of Engineering, University of California, Merced, Merced, California 95343, United States
      Bren School of Environmental Science & Management, University of California, Santa Barbara, Santa Barbara, California 93106, United States
      More by Melissa Thaw
    • Keenan Thomas
      Keenan Thomas
      Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
      More by Keenan Thomas
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    Analytical Chemistry

    Cite this: Anal. Chem. 2021, 93, 10, 4472–4478
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    https://doi.org/10.1021/acs.analchem.0c04490
    Published March 5, 2021
    Copyright © 2021 American Chemical Society
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    Abstract

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    The use of cosmogenically produced sulfur-35 (T1/2 = 87 days) and sodium-22 (T1/2 = 2.6 years) as intrinsic tracers can provide valuable information on catchment hydrology, flow paths, and subsurface storage. A new and straightforward method was created to determine the activities of both 35S and 22Na in various water sources by pumping large volumes (up to 1000 L) of water through cation- and anion-exchange resin columns in the field to collect sodium and sulfate ions and simple chemistry in the lab. Samples are counted for 35S using liquid scintillation counting (LSC) and for 22Na via γ spectroscopy. Our novel in situ method provides faster sample throughput as well as better counting statistics and lower detection limits. Both methods were successfully applied at the Southern Sierra Critical Zone Observatory.

    Copyright © 2021 American Chemical Society

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    Cited By

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    This article is cited by 2 publications.

    1. Xiaomin Lin, Xiaoxiao Yu, Mang Lin. Analysis of Atmospheric Radiosulfur at Natural Abundance by a New-Type Liquid Scintillation Counter Equipped with Guard Compensation Technology. ACS Earth and Space Chemistry 2022, 6 (7) , 1868-1875. https://doi.org/10.1021/acsearthspacechem.2c00104
    2. Michael Schubert, Mang Lin, Jordan F. Clark, Martin Kralik, Sandra Damatto, Lorenzo Copia, Stefan Terzer-Wassmuth, Astrid Harjung. Short-lived natural radionuclides as tracers in hydrogeological studies – A review. Science of The Total Environment 2024, 920 , 170800. https://doi.org/10.1016/j.scitotenv.2024.170800
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    Analytical Chemistry

    Cite this: Anal. Chem. 2021, 93, 10, 4472–4478
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.analchem.0c04490
    Published March 5, 2021
    Copyright © 2021 American Chemical Society
    Request reuse permissions

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