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In the present work the first direct measurement of hydrolysis products of Pu(VI) was achieved by means of nano-electrospray ionization time-of-flight mass-spectrometry. The results indicate that monomeric PuO2(OH)+ and dimeric (PuO2)2(OH)22+ species are present in solution. A trimeric species does not appear within the detection limit of the experiment, in contrast to U(VI) hydrolysis. The relative abundances of the Pu(VI) hydrolysis species in the ESI mass spectra are in good agreement with the published formation constants.
Keywords: PU(VI); Hydrolysis; Electrospray ionization
Published Online: 2013-04-22
Published in Print: 2013-05
© by Oldenbourg Wissenschaftsverlag, München, Germany