Index Catalog // ScholarsArchive@OSU

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:: November 12, 1974 Title: Use of a Tungsten Filament Atomizer in Atomic Absorption. Spectrometry

Multielement atomic absorption and fluorescence spectrometry

Creator:: Salin, Eric Dunbar
Abstract:: A multielement spectrometer has been developed for the simultaneous determination of four elements by atomic absorption (AA) or atomic fluorescence (AF). The spectrometer is based on a multiple exit slit monochromator and uses a mirrored funnel to direct light from the various exit slits to a single photomultiplier. There are...
Resource Type:: Dissertation
Full Text:: absorption (AA) or atomic fluorescence (AF). The spectrometer is based on a mul- tiple exit slit

Theoretical and experimental factors affecting the accuracy and precision of atomic absorption measurements

Creator:: Bower, Nathan Wayne
Abstract:: A procedure for evaluating the precision of atomic absorption measurements is presented and applied to 21 elements under varying instrumental conditions. The experimental relative standard deviations (RSD's) in absorbance obtained from repetitive measurements made with a high resolution voltmeter and on-line computer, are compared to those predicted by a recently...
Resource Type:: Dissertation
Full Text:: and precision of atomic absorption measurements AM ABSTRACT OF THE THESIS OF Nathan Wayne Bower for

Optically stabilized diode laser using high-contrast saturated absorption

Creator:: Cuneo, Christopher J.
Abstract:: Doppler-free saturation spectroscopy in an optically thick atomic vapor is used in an optical-feedback configuration for two semiconductor diode laser systems. One laser system consists of an unmodifed, commercially available diode laser. The other laser system consists of a diode laser initially stabilized by optical feedback from a diffraction grating....
Resource Type:: Masters Thesis
Full Text:: Linewidth 7 Atomic Resonance 12 High-Contrast Saturated Absorption Spectroscopy 13 The Experiment 18

Applications of beta spectroscopy

Creator:: Pratt, David Sheldon
Abstract:: Two applications of beta spectrometry using active gamma-ray discrimination are described. The beta spectra of smears taken at a nuclear power plant at the end of a 300 day shutdown were characterized. The average beta energy at "contact" (1.5 cm) was between 450 and 550 keV for locations influenced by...
Resource Type:: Masters Thesis

Laboratory techniques used for atomic absorption spectrophotometric analysis of geologic samples

Creator:: Fukui, Stan
Abstract:: Precise chemical analyses of geological samples continue to play an important role in geochemical research. During the past 10 years atomic absorption spectrophotometry has become increasingly prominent as an accurate and relatively simple analytical technique. The marine geochemistry group at OST7 has used a Jarrel-Ash 82-820 atomic absorption spectrophotometer (AAS)...
Resource Type:: Technical Report
Full Text:: . In the reverse process, light of the same wavelength is emitted. Atomic absorption spectroscopy is

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

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:: Spectroscopy 11 2.1 Atomic Absorption Spectrometry 11 2.2 Atomic Emission Spectrometry 14 2.3 Mass

The characterization and simplex optimization of a variable-diameter, multielectrode, direct current plasma for atomic emission spectroscopy

Creator:: McGuire, Joseph
Resource Type:: Dissertation
Full Text:: variable-diameter, multielectrode, direct current plasma for atomic emission spectroscopy AN ABSTRACT OF

ScholarsArchive@OSU

Use of a tungsten filament atomizer in atomic absorption spectrometry

Multielement atomic absorption and fluorescence spectrometry

Theoretical and experimental factors affecting the accuracy and precision of atomic absorption measurements

Optically stabilized diode laser using high-contrast saturated absorption

Applications of beta spectroscopy

Laboratory techniques used for atomic absorption spectrophotometric analysis of geologic samples

Sample entraining multi-electrode plasma sources for atomic emission spectroscopy

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

The characterization and simplex optimization of a variable-diameter, multielectrode, direct current plasma for atomic emission spectroscopy

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