Thesis
Complexation of europium(III) with citrate in mixed aqueous media
Washington State University
Master of Science (MS), Washington State University
2019
Handle:
https://hdl.handle.net/2376/103481
Abstract
Environmental contamination at the Hanford Site in southern Washington has resulted from decades of plutonium production for use in nuclear devices. PUREX raffinate and other radioactive waste streams have been discharged to various waste storage methods, but radioactive wastes have spread from their containment into the surrounding soils and groundwater. The elements of the lanthanide series, fission products known to form strong aqueous complexes, represent a large portion of the wastes. Developments in ion mobility spectrometry (IMS) have allowed for the detection of aqueous lanthanide-ligand complexes, but quantification via IMS cannot yet be achieved due to the lack of understanding of the lanthanide complexes in presence of the requisite organic phase modifiers used for IMS measurements. Phase modifiers such as acetonitrile and dimethyl sulfoxide cause changes to the metal-ligand complex stability constants, and thus introduce inaccuracies to quantification efforts if the new stability constants are not taken into account. This work found that the europium-citrate complex stability constant changes significantly with different amounts of acetonitrile and dimethyl sulfoxide, but has not found a trend that agrees with previous work of the same nature.
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Details
- Title
- Complexation of europium(III) with citrate in mixed aqueous media
- Creators
- Ian Sebastian Neil
- Contributors
- Nathalie A. Wall (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Chemistry, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Identifiers
- 99900525177301842
- Language
- English
- Resource Type
- Thesis