Abstract
Summary 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 log β 11=5.72±0.12, and from potentiometric titration log β 11=5.40±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 log β 12 = 8.96±0.18.
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