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The Potential of Radium-224 as a Tra...

Kurpiel, Matthew T.

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The Potential of Radium-224 as a Tracer of Timescales of Gulf of Mexico Crude Oil Exposure to the Marine Environment.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The Potential of Radium-224 as a Tracer of Timescales of Gulf of Mexico Crude Oil Exposure to the Marine Environment./
Author:	Kurpiel, Matthew T.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
Description:	63 p.
Notes:	Source: Masters Abstracts International, Volume: 81-07.
Contained By:	Masters Abstracts International81-07.
Subject:	Geochemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27548297
ISBN:	9781392798218

The Potential of Radium-224 as a Tracer of Timescales of Gulf of Mexico Crude Oil Exposure to the Marine Environment.
Kurpiel, Matthew T.

The Potential of Radium-224 as a Tracer of Timescales of Gulf of Mexico Crude Oil Exposure to the Marine Environment. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 63 p.

Source: Masters Abstracts International, Volume: 81-07.

Thesis (M.S.)--Coastal Carolina University, 2019.

This item must not be sold to any third party vendors.

Petroleum pollution in the marine environment can be deleterious to coastal and marine ecosystems and can have sustained effects for years. While oil slicks on the surface of the ocean are tracked with relative ease using satellite-based technology, deep sea, neutrally-buoyant hydrocarbon plumes remain exceedingly difficult to track. We provide evidence for the utility of 224Ra as a potential hydrocarbon tracer to determine the marine exposure time of crude oil. We employed time course incubations to constrain a time dependent 224Ra release signature and tested a variety of timescales, temporal resolutions, oil sources, seawater, and experimental treatments to determine potential factors that contribute to the variability of 224Ra release from hydrocarbons into seawater. Our results show quantitative release of 224Ra from crude oil in contact with seawater and similar temporal variability (which increases with finer temporal resolution) in 224Ra activity between two oil sources, regardless of the overall magnitude of release. The magnitude of 224Ra release from crude oil is proposed to vary depending on the geochemistry of the source reservoir and biological activity therein as well as geochemical alterations as the oil flows through geologic conduits. Mechanisms of release are thought to be primarily associated with chemical degradation (i.e., photo- and bio-degradation) of the oil matrix and cation exchange processes. These interpretations warrant further investigation. However, our results provide the first evidence that release of 224Ra from crude oil represents a disequilibrium from its particle-sorbed parent isotopes suggesting this isotope may be useful for examining the temporal dynamics of oceanic hydrocarbon plumes.

ISBN: 9781392798218Subjects--Topical Terms:

539092
Geochemistry.
Subjects--Index Terms:

Chemical tracers

The Potential of Radium-224 as a Tracer of Timescales of Gulf of Mexico Crude Oil Exposure to the Marine Environment.
LDR:02935nmm a2200385 4500 001 2268896
005 20200824100421.5
008 220629s2019 ||||||||||||||||| ||eng d
020 $a 9781392798218
035 $a (MiAaPQ)AAI27548297
035 $a AAI27548297
040 $a MiAaPQ $c MiAaPQ
100 1 $a Kurpiel, Matthew T. $3 3546199
245 1 4 $a The Potential of Radium-224 as a Tracer of Timescales of Gulf of Mexico Crude Oil Exposure to the Marine Environment.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2019
300 $a 63 p.
500 $a Source: Masters Abstracts International, Volume: 81-07.
500 $a Advisor: Peterson, Richard.
502 $a Thesis (M.S.)--Coastal Carolina University, 2019.
506 $a This item must not be sold to any third party vendors.
520 $a Petroleum pollution in the marine environment can be deleterious to coastal and marine ecosystems and can have sustained effects for years. While oil slicks on the surface of the ocean are tracked with relative ease using satellite-based technology, deep sea, neutrally-buoyant hydrocarbon plumes remain exceedingly difficult to track. We provide evidence for the utility of 224Ra as a potential hydrocarbon tracer to determine the marine exposure time of crude oil. We employed time course incubations to constrain a time dependent 224Ra release signature and tested a variety of timescales, temporal resolutions, oil sources, seawater, and experimental treatments to determine potential factors that contribute to the variability of 224Ra release from hydrocarbons into seawater. Our results show quantitative release of 224Ra from crude oil in contact with seawater and similar temporal variability (which increases with finer temporal resolution) in 224Ra activity between two oil sources, regardless of the overall magnitude of release. The magnitude of 224Ra release from crude oil is proposed to vary depending on the geochemistry of the source reservoir and biological activity therein as well as geochemical alterations as the oil flows through geologic conduits. Mechanisms of release are thought to be primarily associated with chemical degradation (i.e., photo- and bio-degradation) of the oil matrix and cation exchange processes. These interpretations warrant further investigation. However, our results provide the first evidence that release of 224Ra from crude oil represents a disequilibrium from its particle-sorbed parent isotopes suggesting this isotope may be useful for examining the temporal dynamics of oceanic hydrocarbon plumes.
590 $a School code: 1688.
650 4 $a Geochemistry. $3 539092
650 4 $a Nuclear chemistry. $3 643077
650 4 $a Chemical oceanography. $3 516760
653 $a Chemical tracers
653 $a Crude oil
653 $a Hydrocarbons
653 $a Isotopes
653 $a Petroleum
653 $a Radium
690 $a 0996
690 $a 0738
690 $a 0403
710 2 $a Coastal Carolina University. $b College of Science. $3 3276986
773 0 $t Masters Abstracts International $g 81-07.
790 $a 1688
791 $a M.S.
792 $a 2019
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27548297