Index Catalog // ScholarsArchive@OSU

Nitrogen isotope abundance ratio determination using molecular emission spectrometry

Creator:: Eierman, Robert J.
Resource Type:: Dissertation
Full Text:: Molecular Emission Spectrometry AN ABSTRACT OF THE THESIS OF Robert J. Eierman for the degree of Doctor

Spectroscopic investigation of atomic and molecular species formed in a laser microprobe plasma using a wavelenth calibrated tunable dye laser

Creator:: Beenen, Gerhard Joseph
Abstract:: The temporal and spatial characteristics of a laser microprobe plume were investigated using the spectroscopic methods of emission, absorption and fluorescence. The plume was produced by rapid vaporization of a small quantity (1 μg) of a solid sample using a focussed pulsed dye laser (110 MW/cm²). For absorption and fluorescence...
Resource Type:: Dissertation
Full Text:: Spectroscopic investigation of atomic and molecular

Sample entraining multi-electrode plasma sources for atomic emission spectroscopy

Creator:: Lee, Gae Ho
Abstract:: Plasma sources with multiple electrodes have been developed and characterized in this research for atomic emission spectroscopy. Multi-electrode plasma sources use electrodes to shape the plasma in order to continuously entrain a sample stream in the center of hot plasma, in a manner similar to an inductively coupled plasma (ICP)...
Resource Type:: Dissertation
Full Text:: atomic emission spectroscopy AN ABSTRACT OF THE THESIS OF Gae Ho Lee for the degree of Doctor of

Use of a tungsten filament atomizer in atomic absorption spectrometry

Creator:: Reid, Richard Donald
Abstract:: A nonflame method for atomic absorption spectroscopy is described. A helical tungsten filament from a commercially available 6-V, 4-A light bulb, heated to :incandescence in an argon atmosphere is used to atomize 2-μl aqueous samples for metals analyses. Studies of two hollow cathode lamp tungsten filament orientations, a modulated light...
Resource Type:: Masters Thesis
Full Text:: using a continuum 10 light source to measure molecular absorbance at the wavelength of the

Design, construction, and characterization of a six-electrode, direct current, variable length plasma source for atomic emmission spectroscopy

Creator:: Shields, James Phillip
Abstract:: The variable length, six-electrode plasma source for atomic emission spectroscopy described here is operated from three compact, simple, and inexpensive direct current power supplies. The vertical arcs formed between the three electrode pairs completely entrain the sample and are typically operated at 40 V and 20 A. Three concentric quartz...
Resource Type:: Dissertation
Full Text:: -electrode, direct current, variable length plasma source for atomic emmission spectroscopy AN ABSTRACT OF

Fundamental studies of a gas-jet enhanced sputtering system and its applications

Creator:: Kim, Hyo-jin
Abstract:: The use of gas jets in a sputtering cell makes this direct sampling method practical for atomic absorption and mass spectrometry determinations. With a commercial six-jet sputtering source, the Atomsource (Analyte Corp., Grants Pass, Oregon), that directly atomizes solid samples for conventional atomic absorption spectrophotometers, the sample loss rate for...
Resource Type:: Dissertation
Full Text:: Procedure 63 IV. FUNDAMENTAL STUDIES OF A GAS-JET-ENHANCED SPUTTERING SYSTEM FOR ATOMIC SPECTROSCOPY 64

ESCA studies of a brass surface subjected to gas-jet enhanced sputtering

Creator:: Govier, R. D.
Abstract:: The inert gas ion bombardment of solid surfaces has found many uses in the field of analytical chemistry. In one method of spectrochemical analysis, inert gas ion bombardment in a glow discharge is used to produce an atomic vapor, representative of the sample bulk, which is analyzed using atomic absorption...
Resource Type:: Masters Thesis
Full Text:: understanding of the changes in a brass surface caused by jet-enhanced sputtering. Electron spectroscopy for

Investigation of the relationships between laser energy and vaporized target material, continuum intensity, and plume energy in laser plume spectroscopy

Creator:: Flugstad, Paul Morris
Abstract:: A focused Q-switched neodymium-doped glass laser with power levels ranging from 1-6 MW and with a 50-nsec halfwidth, was used to vaporize copper metal. Experimental measurements showed that the amount of material vaporized away from the target was not linear with laser power and was much less than could be...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF PAUL MORRIS FLUGSTAD for the

Analytical chemistry of pentazocine metabolites produced by the greyhound

Creator:: Xiao, Guang
Abstract:: This thesis concerns itself mainly with analytical methods development and analytical applications in the field of drug metabolism studies. The determination of the analgesic pentazocine and its metabolites in the greyhound are studied. Pentazocine and all of its possible metabolites are isolated from the greyhound urine by a the multi-solvent...
Resource Type:: Dissertation
Full Text:: emphasizing the choice and utilization of selected 1D and 2D NMR methods to determine the molecular

A new general method for the optimization of HPLC ternary of pseudo-quaternary mobile phases and the separation of two new metabolites of nefopam from greyhound urine

Creator:: Chen, Hsiao and Chen, Xiao
Abstract:: A new general method is developed for the optimization of HPLC ternary or pseudo-quaternary mobile phases which are represented by the trilinear coordinate system. This method can predict the global optimum of the mobile phase composition. The global optimum composition along each edge of the triangle and the corresponding selectivity...
Resource Type:: Dissertation
Full Text:: A new general method for the optimization of HPLC ternary

ScholarsArchive@OSU

Nitrogen isotope abundance ratio determination using molecular emission spectrometry

Spectroscopic investigation of atomic and molecular species formed in a laser microprobe plasma using a wavelenth calibrated tunable dye laser

Sample entraining multi-electrode plasma sources for atomic emission spectroscopy

Use of a tungsten filament atomizer in atomic absorption spectrometry

Design, construction, and characterization of a six-electrode, direct current, variable length plasma source for atomic emmission spectroscopy

Fundamental studies of a gas-jet enhanced sputtering system and its applications

ESCA studies of a brass surface subjected to gas-jet enhanced sputtering

Investigation of the relationships between laser energy and vaporized target material, continuum intensity, and plume energy in laser plume spectroscopy

Analytical chemistry of pentazocine metabolites produced by the greyhound

A new general method for the optimization of HPLC ternary of pseudo-quaternary mobile phases and the separation of two new metabolites of nefopam from greyhound urine

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