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Accumulation and Speciation of Cobalt in Paracentrotus lividus

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Download Hi-Res ImageDownload to MS-PowerPointCite This:Environ. Sci. Technol. 2022, 56, 6, 3462-3470
    Contaminants in Aquatic and Terrestrial Environments

    Accumulation and Speciation of Cobalt in Paracentrotus lividus
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    • Benjamin Reeves
      Benjamin Reeves
      Université Côte d’Azur, CNRS, ICN, 06108 Nice, France
      CEA, DAM, DIF, F-92297 Arpajon, France
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    • Maria Rosa Beccia
      Maria Rosa Beccia
      Université Côte d’Azur, CNRS, ICN, 06108 Nice, France
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    • Aurélie Jeanson
      Aurélie Jeanson
      Université Côte d’Azur, CNRS, ICN, 06108 Nice, France
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    • Pier Lorenzo Solari
      Pier Lorenzo Solari
      Synchrotron Soleil, Saint-Aubin, F-91192 Gif-sur-Yvette, France
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    • Bruno Siberchicot
      Bruno Siberchicot
      CEA, DAM, DIF, F-92297 Arpajon, France
      CEA, Laboratoire Matière en Conditions Extrêmes, Université Paris-Saclay, F-91680 Bruyères-le-Châtel, France
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    • Catherine Berthomieu
      Catherine Berthomieu
      CEA, CNRS, Aix Marseille Université, BIAM, 13108 Saint Paul-Lez-Durance, France
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      Orcidhttps://orcid.org/0000-0001-8784-5396
    • Didier Marcellin
      Didier Marcellin
      CEA, CNRS, Aix Marseille Université, BIAM, 13108 Saint Paul-Lez-Durance, France
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    • Nicolas Bremond
      Nicolas Bremond
      CEA, CNRS, Aix Marseille Université, BIAM, 13108 Saint Paul-Lez-Durance, France
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    • Tamar Kerdikoshvili
      Tamar Kerdikoshvili
      Université Côte d’Azur, CNRS, ICN, 06108 Nice, France
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    • Hervé Michel
      Hervé Michel
      Université Côte d’Azur, CNRS, ICN, 06108 Nice, France
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    • Luisa Passeron Mangialajo
      Luisa Passeron Mangialajo
      Université Côte d’Azur, CNRS, ECOSEAS, 06108 Nice, France
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    • Marguerite Monfort
      Marguerite Monfort
      CEA, DAM, DIF, F-92297 Arpajon, France
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    • Christophe Moulin*
      Christophe Moulin
      CEA, DAM, DIF, F-92297 Arpajon, France
      Secrétariat Général de la Défense et de la Sécurité Nationale, 75007 Paris, Seconded from CEA
      *Email: [email protected]
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    • Christophe Den Auwer*
      Christophe Den Auwer
      Université Côte d’Azur, CNRS, ICN, 06108 Nice, France
      *Email: [email protected]
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      Orcidhttps://orcid.org/0000-0003-2880-0280
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    Environmental Science & Technology

    Cite this: Environ. Sci. Technol. 2022, 56, 6, 3462–3470
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.est.1c06702
    Published March 2, 2022
    Copyright © 2022 American Chemical Society
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    Abstract

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    Since the first human release of radionuclides on Earth at the end of the Second World War, impact assessments have been implemented. Radionuclides are now ubiquitous, and the impact of local accidental release on human activities, although of low probability, is of tremendous social and economic consequences. Although radionuclide inventories (at various scales) are essential as input data for impact assessment, crucial information on physicochemical speciation is lacking. Among the metallic radionuclides of interest, cobalt-60 is one of the most important activation products generated in the nuclear industry. In this work, a marine model ecosystem has been defined because seawater and more generally marine ecosystems are final receptacles of metal pollution. A multistep approach from quantitative uptake to understanding of the accumulation mechanism has been implemented with the sea urchin Paracentrotus lividus. In a well-controlled aquarium, the day-by-day uptake of cobalt and its quantification in different compartments of the sea urchin were monitored with various conditions of exposure by combining ICP-OES analysis and γ spectrometry. Cobalt is mainly distributed following the rating intestinal tract ≫ gonads > shell spines. Cobalt speciation in seawater and inside the gonads and the intestinal tract was determined using extended X-ray absorption fine structure (EXAFS). The cobalt inside the gonads and the intestinal tract is mainly complexed by the toposome, the main protein in the sea urchin P. lividus. Complexation with purified toposome was characterized and a complexation site combining EXAFS and AIMD (ab initio molecular dynamics) was proposed implying monodentate carboxylates.

    Copyright © 2022 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.est.1c06702.

    • EXAFS best-fit parameters (Table S1); sea urchinʼs experiments (Table S2); setup for the complexation curve with toposome and the derivative of the curve itself (Figure S1 and legend, Figure S9); cell setup for the EXAFS measurement of Co in seawater and the corresponding spectrophotometric spectra (Figure S2, Figure S3); XANES spectra of Co in the sea urchin compartments compared to the reference compounds(Figures S4, S6, and S7); speciation simulations for Co in seawater (Figure S5ab); a duplicate of the EXAFS measurements in gonads (Figure S8); two EXAFS spectra at two different Co:toposome ratios (Figure S10); radial distribution functions of the AIMD model as well as full models I and II (Figures S11–13) (PDF)

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    Cited By

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    This article is cited by 1 publications.

    1. Samira Bouiba, Mohammed El Amine Bendimerad, Omar Rouane-Hacene, Ahmed Boualga, Jonathan Richir. Metallic trace element dynamics in Paracentrotus lividus from Algeria: Environmental and human health risk assessment. Marine Pollution Bulletin 2023, 187 , 114485. https://doi.org/10.1016/j.marpolbul.2022.114485
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    Environmental Science & Technology

    Cite this: Environ. Sci. Technol. 2022, 56, 6, 3462–3470
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.est.1c06702
    Published March 2, 2022
    Copyright © 2022 American Chemical Society
    Request reuse permissions

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