Index Catalog // ScholarsArchive@OSU

Controlled potential coulometry in non-aqueous solvents--application to the Karl Fisher determination of water and to aromatic nitro compounds in dimethyl-sulfoxide

Creator:: Lindbeck, Melven Raymond
Abstract:: Aromatic Nitro Compounds. The n-values for the reduction of the isomers of nitrophenol and nitrobenzoic acid and for several other nitro compounds are determined in dimethylsulfoxide by controlled potential coulometry. A procedure is given in which one mole of nitro compound may be determined with errors of less than one...
Resource Type:: Dissertation
Full Text:: mole of the nitro compound was then added to the working compartment, and the solution was

The separation of zirconium and magnesium by means of ion exchange

Creator:: Lee, Eugene Edward
Resource Type:: Masters Thesis
Full Text:: magnesium was removed from the resin and ana1yed. The percentage of magnesium recovered and moles of

Analytical utilization of hafnium and zirconium borohydrides

Creator:: Walsh, Ronald Edward
Resource Type:: Dissertation
Full Text:: be quantitatively hydrolyzed, i.e. , 16 moles of hydrogen for each mole of borohydride, and the

The theory and application of galvanovoltammetry. Design, construction and evaluation of a continuous liquid stream analyzer employing a galvanovoltammetric detector and low cost automatic digital concentration readout

Creator:: Kendall, Donald Ray
Abstract:: The theory and ways of applying a new electroanalytical detectior method were developed. The method, called galvanovoltammetry, consists of the measurement of current from the bipolar electrode of a three electrode cell which consists of a working electrode and a counter electrode, between which a constant current is applied, and...
Resource Type:: Dissertation
Full Text:: the current, and is given by the following equation: C nFfe (1) where: C = gram moles/liter, 2

The determination of titanium, zirconium and hafnium in molybdenum, niobium and tantalum alloys by ion exchange

Creator:: Shakashiro, Mouaffac Hamdy
Abstract:: New alloys containing refractory metals have been developed by the aero-space industry to meet the demand for thermally resistant materials. The chemical analysis of these alloys has been handled successfully by the use of ion exchange. Hydrofluoric acid, either alone or combined with hydrochloric acid, has here-to-fore been used to...
Resource Type:: Dissertation
Full Text:: The determination of titanium, zirconium and hafnium in

Chronopotentiometry of Sm(II) and Pm(III) in molten LiCl-KCl eutectic

Creator:: Nixon, Richard Allen
Abstract:: Samarium (III) and promethium (III) were studied by chronopotentiometry in a molten LiCl-KC1 eutectic. Tungsten electrodes were used to avoid alloying effects encountered with platinum electrodes. Adsorption phenomena were observed which prevented the study of any kinetic effects. The quarter wave potentials were measured as: Sm(III) = 0.95 ± 0.05...
Resource Type:: Masters Thesis
Full Text:: (III) AND Pm(III) IN MOLTEN LiCl-KCl EUTECTIC Abstract approved (Major/Professor) Samarium (III

The separation of aluminum and zirconium by ion exchange

Creator:: Miner, Frend John
Resource Type:: Masters Thesis
Full Text:: The separation of aluminum and zirconium by ion exchange

The separation and determination of phosphate by precipitation of zirconium phosphate from homogeneous solution

Creator:: Baird, Stephen Sydney
Resource Type:: Masters Thesis
Full Text:: : In this cese 0.003 moles of zirconium and 0.02 moles of sodium fluoride were used. In order to

The electrochemical oxidation of aqueous sulfur dioxide solutions at a glassy carbon electrode

Creator:: Warden, Bruce Edward
Resource Type:: Masters Thesis
Full Text:: /sec, v = the scan rate in volts/sec, CO is the reactant con- centration in g-moles /1, and a = nFv/RT

A continuous amperometric monitor for aqueous sulfite solutions using bipolar current readout

Creator:: Porter, Miles John
Abstract:: A continuous amperometric monitor for aqueous sulfite solutions has been developed employing the electro-oxidation of sulfur (IV) in 0. 1 M sulfuric acid at a glassy carbon test electrode. The monitor employs a hydrodynamic flow cell, in which the solution stream enters the cell through an orifice impinging on the...
Resource Type:: Masters Thesis
Full Text:: enters the cell through an orifice impinging on the test electrode, and a potentiostat which gives a

Stationary electrode voltammetry and chronoamperometry in an alkali metal carbonate-borate melt

Creator:: Petcoff, Darrell George
Abstract:: The electrochemistry of the lithium-potassium-sodium carbonate-borate melt was explored by voltammetry and chrono-amperometry. In support of this, a controlled-potential polarograph and associated hardware was constructed. Several different types of reference electrodes were tried before choosing a porcelain membrane electrode containing a silver wire immersed in a silver sulfate melt. The...
Resource Type:: Dissertation
Full Text:: and one atmosphere of CO2' that [CO2 .1 M and [0 2 ] 10-8 M. The mole fraction scale for the domain

Electrode double layer measurements and voltammetry of some organosulfur compounds in sulfolane

Creator:: Starkovich, John A.
Abstract:: A new pulse method for measuring differential double layer capacitances has been developed in this work. The technique is based on the determination of the cell time constant which, for an ideally polarized test electrode-solution interface, is composed of the double layer capacitance and solution resistance. By applying small step...
Resource Type:: Dissertation
Full Text:: per mole and 1.2 calories per degree, respectively, indicating that there is little difference

Coulometric determination of dissolved oxygen

Creator:: Healy, Michael Lyon
Abstract:: Many different aspects of the determination of dissolved oxygen by controlled potential coulometry were investigated to find a means of measuring the oxygen content of natural waters. Rapid sampling techniques, simplicity of operation, and rugged structural features were stressed. Cells were designed to operate by either internal electrolysis or external...
Resource Type:: Dissertation
Full Text:: instantaneous rate that a number of moles of sample being electrolyzed to the flow rate R and the molar

A spectrophotometric study of niobium (V) in hydrochloric acid solution

Creator:: Kanzelmeyer, James Herbert
Resource Type:: Dissertation
Full Text:: the exact nature of the system in terms of known physical and chemical relationships. It is hardly

Differential spectrophotometric determination of hafnium in the presence of zirconium

Creator:: Johnson, Arnold Richard
Resource Type:: Dissertation
Full Text:: ,plexes at Various wavelengths Absorbance Vs . Mole Ratio of Xylenol 12? Orange to Zirconium and

Reduction of zirconium(IV) at a Pt microelectrode in fused equimolar sodium chloride-potassium chloride

Creator:: McGlothlan, J. Kirk
Resource Type:: Masters Thesis
Full Text:: molality' and measurements are reported versus AgC1,Ag,and E°mole fraction' PtC12, Pt and C12,C1

Studies of electrode processes with voltage scanning coulometry

Creator:: Sandoz, Dennis Paul
Abstract:: Voltage scanning coulometry was used to study the effects of electrode surfaces and metals on the electrochemistry of the ferric-ferrous couple and the silver ion-silver metal couple. The analytical technique called voltage scanning coulometry is very similar to controlled potential coulometry. The main difference is that in voltage scanning coulometry...
Resource Type:: Masters Thesis
Full Text:: , yielding E= E° nF lnX, Y (2) where x is the number of moles of oxidized species and y is the number

Solvent extraction of zirconium with tributyl phosphate

Creator:: Levitt, Arnold Edwin
Resource Type:: Dissertation
Full Text:: tbe.ais. He also wishes to thank Mr. James H. Kanzelmeyer for his many helpfUl suggestions and his

The colorimetric determination of niobium with thiocyanate

Creator:: Levitt, Arnold Edward
Resource Type:: Masters Thesis
Full Text:: Freund. His valuable aid and suggestions during the preparation of this work are greatly approelated

The colorimetric determination of tantalum with gallic acid

Creator:: Hammill, Kenneth Howard
Resource Type:: Masters Thesis
Full Text:: reagent for tantalum was first suggested to the author by I)r. Tarry Freund, is valuable aid and

Polargraphy in glacial acetic acid

Creator:: Bird, Floyd Weston
Resource Type:: Dissertation
Full Text:: appreciation to Dr. Harry Freund for the assistance given th carrying on this research and writing this

Flame ionization detection of hydrocyanic acid ; Analysis of trace aqueous solutions

Creator:: Claeys, Robert Raymond
Abstract:: A gas chromatographic procedure was developed for the determination of nanogram quantities of hydrocyanic acid using a flame ionization detector. Excellent chromatograms were obtained on a porous polyaromatic polymer column (Porapak Q) at 60°C. The procedure was employed for the analysis of HCN in aqueous cyanide solutions. Solutions as low...
Resource Type:: Dissertation
Full Text:: moles of sample, K is the response factor (coulombs /mole), and R is the response of the detector in

Study of simultaneous codeposition of metals at solid electrodes

Creator:: Yindepit, Somrat
Abstract:: As with many pairs of metals, the electrodeposition of Pb-Tl, Cu-Cd, and Cu-Ni at solid electrodes yielded partial polarization curves shifted from the polarization curves of the single metals. The curves for the more noble metals (Pb, Cu) were shifted negatively while the less noble metals'(Tl, Cd, Ni) curves were...
Resource Type:: Dissertation
Full Text:: electrodeposition of Pb-T1, Cu-Cd, and Cu-Ni at solid electrodes yielded partial polarization curves shifted from

Application of piezoelectric quartz crystal as partition detector : development of a digital transducer

Creator:: Janghorbani, Morteza
Abstract:: AT-cut piezoelectric quartz crystals coated with low vapor pressure materials are evaluated as digital transducers in completely digital detection systems for monitoring gas streams. Mathematical relations describing the detectors are developed and tested. Specific application is made to monitoring gaseous sulfur compounds commonly found in stack effluents of pulp mills....
Resource Type:: Dissertation
Full Text:: for monitoring gas streams. Mathematical relations describing the detectors are developed and tested

The study of fluo-tantalum species by solvent extraction

Creator:: Coker, Marjory Carol
Abstract:: The extraction of tantalum fluoride complexes by large cationic extractants (tetraphenylarsonium ion, TPA, and crystal violet) and by methyl isobutyl ketone (MIBK) has been investigated as a function of fluoride concentration using ¹⁸² Ta as tracer. Extractions by the cationic extractants into chloroform were carried out in the absence of...
Resource Type:: Masters Thesis
Full Text:: perchloric acid by diisopropyl ketone and dibutyl cellosolve; four moles of water are extracted for each

The differential combustion of carbon in cast iron

Creator:: Trammell, David Ross
Resource Type:: Masters Thesis
Full Text:: pH, Figure 2 reveals that forty mole percent of the carbon dioxide will form car- bon.ate ion and

Determination of low level hydrocyanic acid in solution using gas-liquid chromatography

Creator:: Schneider, Carl Rudolph
Resource Type:: Dissertation
Full Text:: high dilution to obtain a value for k of 3»840 for pressure in mm Hg and concentration in mole

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