Search Results - "DUCKWORTH, Douglas C"

Examination of the Potential of Ionic Liquids for Gas Separations by Baltus, Ruth E., Counce, Robert M., Culbertson, Benjamin H., Luo, Huimin, DePaoli, David W., Dai, Sheng, Duckworth, Douglas C.

“…Ionic liquids have received increasing interest in recent years for "green" synthesis and separations because they have essentially no vapor pressure. We have…”
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A NanoSIMS 50 L Investigation into Improving the Precision and Accuracy of the 235U/238U Ratio Determination by Using the Molecular 235U16O and 238U16O Secondary Ions by N. Alex Zirakparvar, Cole R. Hexel, Andrew J. Miskowiec, Julie B. Smith, Michael W. Ambrogio, Douglas C. Duckworth, Roger Kapsimalis, Brian W. Ticknor

“…A NanoSIMS 50 L was used to study the relationship between the 235U/238U atomic and 235U16O/238U16O molecular uranium isotope ratios determined from a variety…”
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Product specific thermal degradation kinetics of bisphenol F epoxy in inert and oxidative atmospheres using evolved gas analysis–mass spectrometry by Dwyer, Derek B., Gallego, Nidia C., Niedziela, Jennifer L., Kapsimalis, Roger J., Duckworth, Douglas C.

“…Knowledge of the degradation kinetics for polymer materials is important for understanding thermal stability. Here, evolved gas analysis–mass spectrometry and…”
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Radio frequency powered glow discharge atomization/ionization source for solids mass spectrometry by Duckworth, Douglas C, Marcus, R. Kenneth

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Electrochemically modulated separations for rapid and sensitive isotopic analysis by Liezers, Martin, Pratt, Sandra H., Hart, Garret L., Duckworth, Douglas C.

“…The desire for more rapid and sensitive analytical determinations of actinides in the environment is being addressed in our laboratory through the development…”
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Electrochemically-induced reactions of hexafluorophosphate anions with water in negative ion electrospray mass spectrometry of undiluted ionic liquids by YUCHEN LU, KING, Fred L, DUCKWORTH, Douglas C

“…The influence of water on the observed gas-phase population of negative ions in electrospray mass spectrometry was studied for the undiluted ionic liquid…”
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Multiple Stable Isotope Characterization as a Forensic Tool to Distinguish Acid Scavenger Samples by Moran, James J., Kreuzer, Helen W., Carman, April J., Wahl, Jon H., Duckworth, Douglas C.

“…:  Acid scavengers are frequently used as stabilizer compounds in a variety of applications. When used to stabilize volatile compounds such as nerve agents,…”
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Determination of plutonium isotope ratios at very low levels by ICP-MS using on-line electrochemically modulated separations by Liezers, M., Lehn, S. A., Olsen, K. B., Farmer, O. T., Duckworth, Douglas C.

“…Electrochemically modulated separations (EMS) are shown to be a rapid and selective means of extracting and concentrating Pu from complex solutions prior to…”
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Electrochemically Modulated Separation, Concentration, and Detection of Plutonium Using an Anodized Glassy Carbon Electrode and Inductively Coupled Plasma Mass Spectrometry by Clark, William J, Park, Sea H, Bostick, Debra A, Duckworth, Douglas C, Van Berkel, Gary J

“…Plutonium is shown to be retained on anodized glassy carbon (GC) electrodes at potentials positive of +0.7 V (vs Ag/AgCl reference) and released upon potential…”
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Dynamic Collision-Induced Dissociation (DCID) in a Quadrupole Ion Trap Using a Two-Frequency Excitation Waveform: II. Effects of Frequency Spacing and Scan Rate by Laskay, Ünige A., Collin, Olivier L., Hyland, Jennifer J., Nichol, Brad, Jackson, Glen P., Pasilis, Sofie P., Duckworth, Douglas C.

“…Dynamic CID of selected precursor ions is achieved by the application of a two-frequency excitation waveform to the end-cap electrodes during the mass…”
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Gas-Phase Reactions of Bare and Ligated Uranium Ions with Sulfur Hexafluoride by Jackson, Glen P, Gibson, John K, Duckworth, Douglas C

“…Reactions of bare and ligated uranium ions with sulfur hexafluoride were studied in a quadrupole ion trap mass spectrometer. Bare U+ was found to react rather…”
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Influence of temperature on accessible pyrolysis pathways of homopolymerized bisphenol A/F epoxies and copolymers by Dwyer, Derek B., Isbill, Sara B., Niedziela, Jennifer L., Kapsimalis, Roger J., Duckworth, Douglas C.

“…•Temperature influences accessible pyrolysis pathways of bisphenol A epoxy resin.•Bisphenol F isomers have different thermal stabilities in cured…”
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Gas-Phase Reactions of U+ and U2+ with O2 and H2O in a Quadrupole Ion Trap by Jackson, Glen P, King, Fred L, Goeringer, Douglas E, Duckworth, Douglas C

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Collision-Induced Dissociation in Quadrupole Ion Traps: Application of a Thermal Model to Diatomic Ions by Goeringer, Douglas E, Duckworth, Douglas C, McLuckey, Scott A

“…Dissociation of the tantalum oxide cation, a strongly bound diatomic, is simulated for the multiple-collision environment of a quadrupole ion trap mass…”
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Electrochemical Sample Pretreatment Coupled On-Line with ICP-MS:  Analysis of Uranium Using an Anodically Conditioned Glassy Carbon Working Electrode by Pretty, Jack R, Duckworth, Douglas C, Van Berkel, Gary J

“…Uranium may be accumulated at an anodized glassy carbon (GC) electrode at −0.15 V and stripped at +1.15 V, allowing electrochemical preconcentration and matrix…”
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Influence of temperature on accessible pyrolysis pathways of homopolymerized bisphenol A/F epoxies and copolymers by Dwyer, Derek B., Isbill, Sara B., Niedziela, Jennifer L., Kapsimalis, Roger J., Duckworth, Douglas C.

“…Understanding the thermal pyrolysis of epoxies and their copolymers is important for identifying structural changes resultant from thermal transients, enabling…”
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Gas-Phase Reactions of U+ and U2+ with O2 and H2O in a Quadrupole Ion Trap by Jackson, Glen P, King, Fred L, Goeringer, Douglas E, Duckworth, Douglas C

“…Reaction pathways and rate constants of gas-phase uranium and uranium oxide ions with O2 and H2O have been investigated using a quadrupole ion trap mass…”
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Ion traps : What do they hold for elemental mass analysis by DUCKWORTH, D. C, BARSHICK, C. M

“…Duckworth and Barshick discuss the analytical applications possible when glow discharge (GD) and inductively coupled plasma (ICP) ion sources are interfaced to…”
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Measurement of collision-induced dissociation rates for tantalum oxide ions in a quadrupole ion trap by Duckworth, Douglas C, Goeringer, Douglas E, McLuckey, Scott A

“…A study of factors influencing the collision-induced dissociation (CID) rate of strongly bound diatomic ions effected via resonance excitation in a quadrupole…”
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Anodic Stripping Voltammetry Coupled On-Line with Inductively Coupled Plasma Mass Spectrometry:  Optimization of a Thin-Layer Flow Cell System for Analyte Signal Enhancement by Pretty, Jack R, Duckworth, Douglas C, Van Berkel, Gary J

“…Parameters affecting analyte signal enhancement in anodic stripping voltammetry-inductively coupled plasma mass spectrometry (ASV-ICP-MS), using a thin-layer…”
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