Abstract
Natural sorbents are mostly useful for retardation of the radionuclides. In this study, the possibility to apply the natural sorbents as carrier materials for radiopharmaceutical in vitro applications has been tested. The sorption experiments with technetium-99 have been carried out on bentonite R. The Kd values have been determined using the batch method. The results of the comparative study of the determination of the distribution coefficient by radiometric and polarographic methods are discussed from point of view of sorbed radionuclides speciation. The DPP polarografic reduction of ammoninium pertechnetate and potassium perrhenate has been studied in aqueous solution with a variety of supporting electrolytes. The formation of the rhenium and technetium complexes as a function of the aqueous phase pH has been studied by the polarographic method.
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Kohlíčková, M., Jedináková-Křížová, V. & Horejš, M. Influence of technetium and rhenium speciation on their sorption on natural sorbents. Czech J Phys 49 (Suppl 1), 695–700 (1999). https://doi.org/10.1007/s10582-999-1051-y
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DOI: https://doi.org/10.1007/s10582-999-1051-y