On the polymerization of hexavalent uranium. An electrospray mass spectrometry study

Rapid Communications in Mass Spectrometry : RCM
M SteppertS Büchner

Abstract

Polymerization in hexavalent uranium solutions was measured by electrospray ionization time-of-flight mass spectrometry in three different acidic media at pH values from 3 to 5.3 in order to detect all hydrolysis species present in solution. The aqueous solutions were directly measured without further dilution in organic solvents. At high uranyl concentrations ([U(VI)] = 10(- 3) M) artifacts were observed due to the presence of more than one solution species per formed microdroplet. Those artifacts were composed of ions and neutral species being present in the same droplet. However, by analyzing the detected species carefully, the origin of the artifacts could be traced back to the physically meaningful species. Still, only general trends of the hydrolysis behavior can be deduced from the measurements at [U(VI)] = 1 ⋅ 10(- 3) M. The solutions at [U(VI)] = 5 ⋅ 10(- 5) M did not show any comparable artifact formation. The detected species distributions resemble the expected trends calculated from the equilibrium constants published in the Nuclear Energy Agency Thermodynamic Database (NEA-TDB). The neutral (UO(2))(CO(3))(0) species present in solution causes, if located in the same microdroplet as a charged species, the apparent f...Continue Reading

References

Apr 23, 2004·Journal of Mass Spectrometry : JMS·Arja SarpolaRisto S Laitinen
Dec 22, 2005·Mass Spectrometry Reviews·Valerio B Di Marco, G Giorgio Bombi
Apr 6, 2007·Analytical and Bioanalytical Chemistry·Clemens WaltherThorald Bergmann
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May 1, 1992·Journal of the American Society for Mass Spectrometry·Z L ChengS S Berman

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Citations

Jan 17, 2013·Chemical Reviews·Clemens Walther, Melissa A Denecke
Apr 18, 2013·Rapid Communications in Mass Spectrometry : RCM·P G JaisonSuresh K Aggarwal
Sep 3, 2013·Rapid Communications in Mass Spectrometry : RCM·Adetayo M Mustapha, Sofie P Pasilis
Jan 15, 2015·Inorganic Chemistry·Daniel K UnruhTori Z Forbes
Mar 17, 2016·Expert Opinion on Therapeutic Targets·Paola MorenoRobert T Jensen
Aug 5, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Manon Cot-AuriolSergey I Nikitenko
Apr 27, 2019·Inorganic Chemistry·Kathryn GeorgeChristelle Tamain
Jul 13, 2018·Environmental Science & Technology·Thomas S NeillSamuel Shaw

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