A5011115471- Radioactive element chemistry and processing
- Radioactive contamination and transfer
- Nuclear Materials and Properties
- Nuclear Physics and Applications
- Radioactivity and Radon Measurements
- Nuclear materials and radiation effects
- Radiation Detection and Scintillator Technologies
- Electron and X-Ray Spectroscopy Techniques
- Extraction and Separation Processes
- Analytical chemistry methods development
- Nuclear reactor physics and engineering
- Bauxite Residue and Utilization
- Mass Spectrometry Techniques and Applications
- Particle physics theoretical and experimental studies
- Advanced Materials Characterization Techniques
- Molten salt chemistry and electrochemical processes
- X-ray Spectroscopy and Fluorescence Analysis
- Dark Matter and Cosmic Phenomena
- Hydrogen embrittlement and corrosion behaviors in metals
- Neutrino Physics Research
- Mine drainage and remediation techniques
- Heavy metals in environment
- Recycling and Waste Management Techniques
- Clay minerals and soil interactions
- Lanthanide and Transition Metal Complexes
Pacific Northwest National Laboratory
2015-2025
Battelle
2016-2024
Government of the United States of America
2023
Washington State University
2022
Texas A&M University
1966
Understanding the reactivity of metal cations with various reaction gases in inductively coupled plasma tandem mass spectrometry (ICP-MS/MS) is important to determine best gas use for a given analyte/interference pair. In this study, nitric oxide (NO) was investigated as following previous experimental designs. The reactions 50 elements were examine periodic trends reactivity, validate theoretical modeling enthalpies method screen reactant gases, and provide baseline data set potential...
The ability to acquire high-quality spatially-resolved mass spectrometry data is sought in many fields of study, but it often comes with high cost instrumentation and a level expertise required. In addition, techniques highly regarded for isotopic analysis applications such as thermal ionization (TIMS) do not have the data. Another drawback that radioactive materials, which are interest geochemistry nuclear forensics applications, high-end instruments restrictions on radioactivity...
In this study, I2(g) reactions with 11 metal wires (i.e., Al, Ag, Cu, In, Mo, Nb, Ni, Pd, Pt, Sn, Ta) were evaluated at three temperatures 100 ± 3, 123 4, 139 5 °C) exposure times of 24 h each temperature. Over these temperatures, some the metals showed increased mass gain higher Cu), Sn decreased iodine capture and most little to no all temperatures. Silver mordenite (AgZ) was used as a standard during studies consistent (m %I) 10.6 → 12.8% over temperature range. The values captured per...
This Review summarizes a range of analytical techniques that can be used to detect, quantify, and/or distinguish between isotopes iodine (e.g., long-lived 129I, short-lived 131I, stable 127I). One reason this is interest understanding potential radioiodine release from nuclear processes crucial prevent environmental contamination and protect human health as it incorporate into the thyroid leading cancer. It also for evaluating retention performances next-generation off-gas capture materials...
The adsorption behavior of molecular iodine is important for understanding the spread radioiodine in a nuclear accident. Prior experiments indicate that, addition to interaction with Fe, [i.e., I2(g)] also interacts next most abundant components austenitic stainless steel (i.e., Ni, and Cr) at room temperature. In this study, we investigate on Cr while focusing variables affecting as well compounds that are formed during adsorption. Scanning electron microscopy energy-dispersive X-ray...
The TODGA (Tetraoctyldiglycolamide) and HEH[EHP] (2-ethylhexylphosphonic acid mono-2-ethylhexyl ester) extractants used in ALSEP (Actinide Lanthanide SEParation) are similar to Eichrom© Technologies’ commercially available resins DGA-n LN2. current work aims understand the translatability of a solvent extraction system multi-modal resin chromatography for use nuclear forensics/consequence management. results demonstrate benefits limitations process at radioanalytical scale. A fraction from...
Understanding molecular-scale factors governing the precipitation of aluminum hydroxides, such as gibbsite, under alkaline conditions is important for formation laterite deposits, well processing. However, mechanisms enabling tetrahedral aluminate ions to assemble into octahedral sites gibbsite lattice remain unclear. Formation oligomeric complexes has been hypothesized a critical intermediate step. Here, we report study solubility in highly solutions using deuterium substitution probe...