Index Catalog // ScholarsArchive@OSU

A multivariate statistical approach to identifying organic compounds using an oscillating plasma glow discharge detector for gas chromatography

Creator:: Smith, Diane Lynn
Abstract:: An oscillating plasma glow discharge detector for gas chromatography is used to obtain fingerprint information about an analyte by combining both the average cell current and oscillation frequency signals. Five homologs each of the n-alkanes, 1-alkenes, 1-alkynes, 2-ketones and aldehydes are studied. Although triplicate determinations had some scatter due to...
Resource Type:: Dissertation
Full Text:: Oscillating Plasma Glow Discharge Detector For Gas Chromatography Abstract approved. Edward H. Piepmeier An

A study of photon counting employing a double-beam digital photometer

Creator:: Ash, Kenneth Carl
Abstract:: A double-beam photometer was designed and built employing photon counting to give a direct digital readout. It was evaluated as an analytical instrument with special emphasis on pulse recovery time, pulse interaction and instrument settings. An equation is developed to explain pulse interaction in event counting systems.
Resource Type:: Masters Thesis
Full Text:: Dr. Edward H. Piepmeier for his suggestions and technical assistance in the completion of this

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:: dishonorable members of FAC) for their acceptance, support and good times. TABLE OF CONTENTS Page I

A new glow discharge detector for carbohydrates in aqueous chromatography

Creator:: Herring, Christopher Jackson
Abstract:: An atmospheric pressure argon glow discharge is shown to detect trace levels of carbohydrates in aqueous flowing systems, using either of two glow discharge solution interface configurations. The first configuration consists of an oscillating glow discharge sustained between a flowing aqueous cathode and platinum anode. Picomole and micromolar mass and...
Resource Type:: Dissertation
Full Text:: Carbohydrates in Aqueous Chromatography. Abstract approved: Edward H. Piepmeier An atmospheric

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:: Sputtering System and its Applications Abstract approved: Redacted for Privacy Edward H. Piepmeier The

Effects of atmospheric pressure on line widths and spatial distributions of the transient atomic absorption signals of minor constituents in metal samples atomized by a dye laser microprobe

Creator:: Manabe, Ronald M.
Abstract:: Investigations of plasma production by a pulsed dye laser microprobe were made. Comparisons between a Q- switched and a pulsed dye laser system were made on the intensity of the continuum produced by atmospheric breakdown. The dye laser system was foundtominimize the production of the continuum which in turn allowed...
Resource Type:: Dissertation
Full Text:: Redfern for Ronald Masao Manabe TABLE OF CONTENTS Chapter Page I. INTRODUCTION 1 II. INSTRUMENTATION

Evaluation of a photon-counting technique for the reaction rate determination of glucose

Creator:: Rhodes, Roxie Roberta
Abstract:: A photon-counting technique which provides direct digital read-out of data has been developed and evaluated for the reaction rate determination of glucose. The enzyme catalyzed oxidation of glucose to gluconic acid and hydrogen peroxide with the subsequent reaction of hydrogen peroxide with excess iodide to produce tri-iodide is followed by...
Resource Type:: Masters Thesis
Full Text:: ACKNOWLEDGMENT The author would like to express her appreciation to Dr. Edward H. Piepmeier for his advice

An atmospheric pressure glow discharge detector for capillary column gas chromatography

Creator:: Baur, Susanna S.
Abstract:: The change in the oscillation frequency in the current of an atmospheric helium glow discharge is a sensitive detector for gas chromatography. The response of the detector is in the femtomole and picomole range for nonane and decane. The effluent of a capillary column is directed into a glow discharge...
Resource Type:: Masters Thesis
Full Text:: Discharge Detector for Capillary Column Gas Chromatography. Abstract approved: Edward H. Piepmeier The

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:: express his gratitude to Dr. Edward Piepmeier for his help, guidance and encouragement throughout the

A three-phase argon plasma arc for analytical emission spectroscopy

Creator:: Mattoon, Terence Richard
Abstract:: A new three-phase argon plasma arc was developed for analytical emission spectroscopy. The power supplied to the plasma arc utilized a simple circuit with three-phase as line voltage stepped down via a transformer to 104Vrms. A three concentric quartz tubing assembly was determined to be the optimum configuration for supplying...
Resource Type:: Masters Thesis
Full Text:: SPECTROSCOPY Abstract approved: Redacted for Privacy Edward H. Piepmeier A new three-phase argon plasma arc

ScholarsArchive@OSU

A multivariate statistical approach to identifying organic compounds using an oscillating plasma glow discharge detector for gas chromatography

A study of photon counting employing a double-beam digital photometer

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

A new glow discharge detector for carbohydrates in aqueous chromatography

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

Effects of atmospheric pressure on line widths and spatial distributions of the transient atomic absorption signals of minor constituents in metal samples atomized by a dye laser microprobe

Evaluation of a photon-counting technique for the reaction rate determination of glucose

An atmospheric pressure glow discharge detector for capillary column gas chromatography

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

A three-phase argon plasma arc for analytical emission spectroscopy

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