Abstract
The complex formation of U(VI) with glutathione, uric acid and benzoic acid was studied using spectroscopic techniques. Additionally glutathione was derivatized to obtain different glutathione-S-conjugates in order to assess the influence of the thiol group on complex stability. In the U(VI)-glutathione system a 1 : 1 complex with a large stability constant of 39.07 ± 0.15 could be identified. Derivatization did not lead to a decrease in complex stability. Thus a significant influence of the thiol group on U(VI) coordination can be excluded. Investigating the U(VI) complexation by uric acid and benzoic acid, for both ligands a comparably weak complexation was found. Structure-related reasons for the difference in complex stability are discussed.
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Frost, L., Osman, A., Geipel, G., Viehweger, K., Moll, H., Bernhard, G. (2011). The Interaction of U(VI) with Some Bioligands or the Influence of Different Functional Groups on Complex Formation. In: Merkel, B., Schipek, M. (eds) The New Uranium Mining Boom. Springer Geology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-22122-4_69
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DOI: https://doi.org/10.1007/978-3-642-22122-4_69
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