ORCID ID

0009-0007-4848-6862

Date of Award

5-2024

Degree Type

Thesis

Degree Name

M.S.

Degree Program

Chemistry

Department

Chemistry

Major Professor

David C. Podgorski

Abstract

In this thesis, petroleum-contaminated groundwater from three spill-affected Minnesota sites—two contaminated with crude oil; one with diesel—is investigated to elucidate whether differences in degradation products from different parent oils exist. After spill events, parent molecules from the leaked oil seep underground and undergo microbial degradation over time, transforming into hydrocarbon oxidation products (HOPs), water-soluble contaminants that infiltrate groundwater aquifers, flowing into nearby environments and towns while exhibiting environmental persistence, toxicity to aquatic biota, and potential risks to humans that become exposed. Spectroscopic and chromatographic study of the structural themes and spatial distributions of HOPs reveals preferential degradation of aliphatic (biolabile) over condensed aromatic (biorefractory) HOPs, with distinct diesel trends detected. Thus, correlations between crude oil- and diesel-based degradational products and the parent petroleum at spill sources were exposed at the three contaminated groundwater sites, offering insight for environmental risk assessment and mitigation strategies to better predict spill outcomes.

Rights

The University of New Orleans and its agents retain the non-exclusive license to archive and make accessible this dissertation or thesis in whole or in part in all forms of media, now or hereafter known. The author retains all other ownership rights to the copyright of the thesis or dissertation.

Creative Commons License

Creative Commons Attribution-No Derivative Works 4.0 International License
This work is licensed under a Creative Commons Attribution-No Derivative Works 4.0 International License.

Available for download on Wednesday, March 26, 2025

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