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A critical comparison of methods for the determination of phytoplankton chlorophyll

Creator:: Salinas, John T.
Abstract:: The concentration of chlorophyll in natural bodies of water is commonly determined as a means to rapidly estimate the phytoplankton biomass. The literature gives numerous warnings, however, as to the problems involved with accurately determining chlorophyll concentrations. The author's work at Crater Lake, Oregon enticed him to explore critically the...
Resource Type:: Masters Thesis
Full Text:: , the absorbed energy can be used for photosynthesis or fluorescence. Thus the fluorescence yield of

Photoelectron spectroscopy of small molecules

Creator:: Bomben, Kenneth D.
Abstract:: The photoelectron spectra of a series of halogenated molecules have been investigated in the gas phase. Both core-ionization energies and Auger kinetic energies were measured to probe the nature of the interaction that holds a core electron to the molecule. It was found that satellite structure (shake) could be used...
Resource Type:: Dissertation
Full Text:: state and Rs is a 22 intra-atomic "static" relaxation energy for the L shell that arises because of

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:: variables. 11. Energy levels and gf-values for Fe(I) lines. 12. Comparison of various results of

Selective detection for gas chromatography by ultraviolet spectrometry

Creator:: Van Engelen, Debra L.
Abstract:: Spectrometric detection systems for gas chromatography (GC) based on gas phase ultraviolet absorbance and fluorescence measurements have been developed and evaluated in this research. Polynuclear aromatic compounds (PNAs) are selectively detected by these systems. Limits of detection for PNAs range from 4 ng to 90 ng for absorbance determinations, and...
Resource Type:: Dissertation
Full Text:: spectrometry AN ABSTRACT OF THE THESIS OF Debra L. Van Engelen for the degree of Doctor of Philosophy in

Mass-flow control system utilizing flow-feedback for gas chromatography

Creator:: Dodo, Gerald Haruo
Abstract:: A unique mass-flow control system for the carrier gas in gas chromatography is described and evaluated. Carrier gas flow is controlled by a flow sensor, feedback electronics, a flow-control valve and a microcomputer. The flow-rate is monitored by a mass-flow meter by this system and the flow is adjusted in...
Resource Type:: Masters Thesis
Full Text:: chromatography AN ABSTRACT OF THE THESIS OF Gerald Haruo Dodo for the degree of Master of Science in

Chemical analysis for boron in nuclear reactor coolant water

Creator:: McDaniel, Dawn Marie
Resource Type:: Masters Thesis
Full Text:: McDaniel for the degree of Master of Science in Chemistry presented on December 13., 198j_..... Title

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:: -AES was written by Goode (31). 12 The MIP is used for detection of high excitation energy halogen

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

Vibrational spectroscopy of hydrogen bonded species

Creator:: Hopkins, Glen A.
Abstract:: Due to its importance, the phenomenon of hydrogen bonding has been the subject of much research over the years. Among the different techniques used to study hydrogen bonded systems, vibrational spectroscopy is perhaps the most sensitive because of the striking changes induced in molecular spectra by the formation of hydrogen...
Resource Type:: Masters Thesis
Full Text:: energy surface for hydrogen atom motion can only be obtained from gas phase studies of simple model

Syntheses and structures of new inorganic borates

Creator:: Sun, Hongxing
Abstract:: Several new solid-state inorganic borates have been prepared and characterized. Single crystals of the simple orthoborate ScB0₃ were grown and its structure was determined by single-crystal X-ray methods. The new borates Li₃Sc(B0₃)₂, LaSc₃(B0₃)₄, NdSc₃(B0₃)₄, SrNaB0₃, and Li4Ln4MB90₂₃ (Ln = Y, Er, and Gd; M = Al and Ga) were identified...
Resource Type:: Dissertation
Full Text:: transfer of energy has been observed for compounds described in this thesis. A schematic representation

ScholarsArchive@OSU

A critical comparison of methods for the determination of phytoplankton chlorophyll

Photoelectron spectroscopy of small molecules

Sample entraining multi-electrode plasma sources for atomic emission spectroscopy

Selective detection for gas chromatography by ultraviolet spectrometry

Mass-flow control system utilizing flow-feedback for gas chromatography

Chemical analysis for boron in nuclear reactor coolant water

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

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

Vibrational spectroscopy of hydrogen bonded species

Syntheses and structures of new inorganic borates

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