Award Date

12-1-2012

Degree Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Chemistry

First Committee Member

Kenneth Czerwinski

Second Committee Member

Kenton Moody

Third Committee Member

Julie Gostic

Fourth Committee Member

Marianne Wilkerson

Fifth Committee Member

Steve Conradson

Sixth Committee Member

Ralf Sudowe

Number of Pages

224

Abstract

Concerns over the proliferation and instances of nuclear material in the environment have increased interest in the expansion of nuclear forensics analysis and attribution programs. A new related field, molecular forensic science (MFS) has helped meet this expansion by applying common scientific analyses to nuclear forensics scenarios. In this work, MFS was applied to three scenarios related to nuclear forensics analysis. In the first, uranium dioxide was synthesized and aged at four sets of static environmental conditions and studied for changes in chemical speciation. The second highlighted the importance of bulk versus particle characterizations by analyzing a heterogeneous industrially prepared sample with similar techniques. In the third, mixed uranium/plutonium hot particles were collected from the McGuire Air Force Base BOMARC Site and analyzed for chemical speciation and elemental surface composition. This work has identified new signatures and has indicated unexpected chemical behavior under various conditions. These findings have lead to an expansion of basic actinide understanding, proof of MFS as a tool for nuclear forensic science, and new areas for expansion in these fields.

Keywords

EXAFS; Forensic sciences; Molecular forensics; Nuclear forensics; Plutonium; Radioactive pollution; Radioactive substances; Uranium

Disciplines

Analytical Chemistry | Environmental Chemistry | Inorganic Chemistry | Radiochemistry

Language

English


Share

COinS