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Permanent link (DOI): https://doi.org/10.7939/R3Q23R80W

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Vanadium Speciation in Samples Relevant to the Athabasca Oil Sands Region Open Access

Descriptions

Other title
Subject/Keyword
Hyalella azteca
oil sands process water
vanadium
HPLC-ICP-MS
speciation
Athabasca Oil Sands
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Jensen-Fontaine, Madeleine
Supervisor and department
Le, X. Chris (Laboratory Medicine & Pathology, Chemistry)
Examining committee member and department
Dechaine, Greg (Chemical and Materials Enginering)
Harynuk, James (Chemistry)
Department
Department of Chemistry
Specialization

Date accepted
2012-07-11T10:50:16Z
Graduation date
2012-11
Degree
Master of Science
Degree level
Master's
Abstract
The most prevalent oxidation states of vanadium in nature are V(IV) and V(V). Toxicity of vanadium increases with increasing oxidation state. A high-performance-liquid-chromatography inductively-coupled-plasma mass-spectrometry method was optimized for the speciation of V(IV) and V(V). It was applied to the investigation of vanadium leaching from petroleum coke into oil sands process water. Both V(IV) and V(V) leached from the coke into the water but the V(IV) rapidly oxidized to V(V) in the absence of ethylenediaminetetraacetic acid (EDTA). A species preservation method using EDTA was developed that stabilized the species distribution and concentration for 56 days. The method was applied to a 7-day exposure study of V(IV) and V(V) on Hyalella azteca. Tissue extract contained V(IV), V(V), and an unknown vanadium species. V(IV) oxidized in the test water, so the animals were mostly exposed to V(V). Speciation provides essential insight and information on vanadium present in samples.
Language
English
DOI
doi:10.7939/R3Q23R80W
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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