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A. Koban, Gerhard Geipel, Gert Bernhard

Complex formation between uranium(VI) and α-D-glucose 1-phosphate

The complex formation of uranium(VI) with α-D-glucose 1-phosphate ({C₆H₁₁O₆PO₃^2-, G1P) was determined by time-resolved laser-induced fluorescence spectroscopy (TRLFS) at pH 4 and potentiometric titration in the pH range from 3 to 10. Both measurements show the formation of a 1:1 complex at lower pH values. The formation constant of UO₂(C₆H₁₁O₆PO₃) was calculated from TRLFS measurements to be logβ₁₁=5.72&plusm;0.12, and from potentiometric titration logβ₁₁=5.40&plusm;0.25, respectively.
It was found by potentiometric titration that at higher pH values the complexation changes to a 1:2 complex. The stability constant for this complex was calculated to be logβ₁₂ = 8.96&plusm;0.18.

Radiochimica Acta, Oldenbourg Wissenschaftsverlag

Print ISSN: 0033-8230
Volume: 91, 07/2003
Pages: 393

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