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Effect of fulvic acid and ionic strength on the sorption of radiostrontium on Chinese calcareous soil and its solid components

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Summary

The sorption and desorption of radionuclide 90Sr2+were investigated on untreated calcareous soil and two treated soils to remove organic matter and calcium carbonate using batch technique. The experiments were carried out at ambient condition, pH 7.8±0.1 and in the presence of 0.001M NaCl. Effects of fulvic acid and ionic strength on the sorption of 90Sr2+on calcareous soil were also studied. It was found that the sorption isotherms are linear in the strontium concentration range used herein, and the sorption of 90Sr2+on the calcareous soil can be described as a reversible sorption process and the sorption mechanism is mainly ion-exchange. The sorption is dependent on ionic strength, and fulvic acid enhances the sorption of 90Sr2+on calcareous soil. Organic matter present in the calcareous soil is a significant trap of 90Sr2+and is responsible for the sorption.

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Authors and Affiliations

  1. Anhui Science and Technology University; Institute of Plasma Physics, Chinese Academy of Science, Fenyang, 233100, Anhui, P.R. China; P.O. Box 1126, Hefei, 230031, P.R. China

    M. L. Zhang

  2. Anhui Science and Technology University; Institute of Plasma Physics, Chinese Academy of Science, Fenyang, 233100, Anhui, P.R. China; P.O. Box 1126, Hefei, 230031, P.R. China

    M. L. Zhang

  3. Anhui Science and Technology University; Institute of Plasma Physics, Chinese Academy of Science, Fenyang, 233100, Anhui, P.R. China; P.O. Box 1126, Hefei, 230031, P.R. China

    M. L. Zhang

  4. Institute of Plasma Physics, Chinese Academy of Science, P.O. Box 1126, Hefei, 230031, P.R. China

    A. Ren

  5. Institute of Plasma Physics, Chinese Academy of Science, P.O. Box 1126, Hefei, 230031, P.R. China

    A. Ren

  6. Institute of Plasma Physics, Chinese Academy of Science, P.O. Box 1126, Hefei, 230031, P.R. China

    A. Ren

  7. Institute of Plasma Physics, Chinese Academy of Science, P.O. Box 1126, Hefei, 230031, P.R. China

    D. Shao

  8. Institute of Plasma Physics, Chinese Academy of Science, P.O. Box 1126, Hefei, 230031, P.R. China

    D. Shao

  9. Institute of Plasma Physics, Chinese Academy of Science, P.O. Box 1126, Hefei, 230031, P.R. China

    D. Shao

  10. Institute of Plasma Physics, Chinese Academy of Science, P.O. Box 1126, Hefei, 230031, P.R. China

    X. Wang

  11. Institute of Plasma Physics, Chinese Academy of Science, P.O. Box 1126, Hefei, 230031, P.R. China

    X. Wang

  12. Institute of Plasma Physics, Chinese Academy of Science, P.O. Box 1126, Hefei, 230031, P.R. China

    X. Wang

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  1. M. L. Zhang
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Zhang, M., Zhang, M., Zhang, M. et al. Effect of fulvic acid and ionic strength on the sorption of radiostrontium on Chinese calcareous soil and its solid components. J Radioanal Nucl Chem 268, 33–36 (2006). https://doi.org/10.1007/s10967-006-0119-4

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  • DOI: https://doi.org/10.1007/s10967-006-0119-4

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