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Development of trace enrichment techniques for trace metals in natural waters using high pressure liquid chromatography

Creator:: Ambrose, Arthur Sigurd
Abstract:: An on-line trace enrichment (TE) system, based on high pressure liquid chromatogroaphy (HPLC) and flame atomic absorption (AA), has been developed for trace metal analysis. The sample is pumped through a column filled with a cation exchange resin which traps metal ions. The ions are subsequently stripped from the column...
Resource Type:: Dissertation
Full Text:: and pass directly into the AA for quantitation. Calibration is achieved with an 87p L sample loop

Studies on the biosynthesis of the streptolidine moiety of streptothricin F

Creator:: Wityak, John
Abstract:: The loss of all deuterium labels from previous feedings of [2-²H]-, [3,3-²H₂]-, and [2,3,3-²H₃]arginines had indicated the possible intermediacy of β-hydroxy- and β-ketoarginine (30 and 31, respectively) in the biosynthesis of the streptolidine portion of streptothricin F (la). In order to confirm or refute this evidence, D,L-[2,3,3,5,5-²H₅]- arginine (32) was...
Resource Type:: Dissertation
Full Text:: streptolidine portion of streptothricin F (la). In order to confirm or refute this evidence, D ,L- [2,3,3 ,5 ,5

Development of automated on-line ion exchange systems for the determination of chemical speciation of trace metals in natural waters

Creator:: Liu, Yan
Abstract:: An automated on-line ion exchange trace enrichment system has been developed to improve the detection limits of flame atomic absorption (AA) spectrophotometry in the determination of trace metals in natural waters. The sample solution is passed through a column of Chelex-100 chelating resin by a carrier buffer stream delivered from...
Resource Type:: Dissertation
Full Text:: system with flame AA detection are 0.09 pg/L for Cu and Cd and 0.08 pg/L for Mn with a 10-mL sample loop

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:: than 2% (relative standard deviation). A total of less than 6 L/min of argon gas is required to

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:: sample, to the plasma. The argon consumption rate of typically 7.4 L/min is comparable to or less than

Analytical chemiluminescence measurements and instrumentation

Creator:: Marino, Dean Frank
Resource Type:: Dissertation
Full Text:: Date Thesis is presented May 23, 1980 Typed by Sandra L. Dow for Dean Frank Marino DEDICATED TO

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:: L. 3-11 High fidelity optics for time, wavelength, and 54 spatial resolution. a) External optics

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:: ICP and its development can be found in review articles by Fassel (16) and Barnes (17). Recent

Microcomputer controlled chemical and radiochemical separations and analysis

Creator:: Bennett, Casey Wayne
Abstract:: An automated radiochemical flow analysis (ARFA) system was developed which integrates chemical and radiochemical techniques into one system through the use of a microcomputer. The operator, through the microcomputer, controls valves and pumps to transfer sample and reagent solutions to counting loops, ion exchange columns and holdup reservoirs. A Ge(Li)...
Resource Type:: Dissertation
Full Text:: been used by Miyazaki and Barnes for selective retention of rare earth metals and for speciation

Cocondensation products of molybdenum trioxide with water, carbon disulfide, and various small organic molecules

Creator:: McAfee, Lyle Vernon
Resource Type:: Dissertation

ScholarsArchive@OSU

Development of trace enrichment techniques for trace metals in natural waters using high pressure liquid chromatography

Studies on the biosynthesis of the streptolidine moiety of streptothricin F

Development of automated on-line ion exchange systems for the determination of chemical speciation of trace metals in natural waters

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

Analytical chemiluminescence measurements and instrumentation

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

A three-phase argon plasma arc for analytical emission spectroscopy

Microcomputer controlled chemical and radiochemical separations and analysis

Cocondensation products of molybdenum trioxide with water, carbon disulfide, and various small organic molecules

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