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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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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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