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Efficient phase transfer of pertechnetate with bicyclic guanidinium compounds

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Abstract

Extraction of pertechnetate with bicyclic guanidinium compounds has been studied in the KTcO4-buffer-H2O/ligand-trichloromethane system. Extraction data of guanidinium ligands have been compared with trialkylmethylammonium (Aliquat 336), tetraphenylphosphonium and tetraphenylarsonium chloride. The lipophilicity of extractants investigated was determined by RP-HPLC. The efficiency of pertechnetate extraction correlates with the lipophilicity of the guanidinium compounds. 1:1 complex formation in the organic phase was observed. The influence of hydroxide, chloride and bicarbonate on the pertechnetate extraction has been investigated. Pertechnetate is extracted with great preference over OH, Cl and HCO3 , ions.

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Stephan, H., Berger, R., Spies, H. et al. Efficient phase transfer of pertechnetate with bicyclic guanidinium compounds. J Radioanal Nucl Chem 242, 399–403 (1999). https://doi.org/10.1007/BF02345569

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