Index Catalog // ScholarsArchive@OSU

A reaction rate determination of aluminum with a microcomputer-based spectrofluorometer

Creator:: Campi, Gregory Louis
Abstract:: The development and optimization of a fluorometric reaction rate method for the determination of aluminum is described. Modifications to existing instrumentation permit automatic monitoring and reporting of measurement conditions. Automatic correction of measured analytical signals is provided if monitored parameters deviate from optimum values. A computer controlled standard addition procedure...
Resource Type:: Masters Thesis
Full Text:: . Ingle, , Jr. The development and optimization of a fluorometric reaction rate method for the

Design and application of a microcomputer automated multielement flame atomic fluorescence instrument

Creator:: Neyzari, Shahrokh Ghaffari
Abstract:: An automated multielement flame atomic fluorescence (AF) spectrometer based on microcomputer control was constructed to determine four elements simultaneously. The instrument employs a multiple exit slit monochromator where the light from various exit slits is directed to a single detector with a mirrored funnel. Each element is excited to fluoresce...
Resource Type:: Dissertation
Full Text:: Design and application of a microcomputer automated

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:: . James D. Ingle, Jr. The concentration of chlorophyll in natural bodies of water is commonly determined

A microcomputer automated anodic stripping voltammetric analyzer for trace heavy metal speciation

Creator:: Dewald, Lamar Robert
Abstract:: An automated instrument based on a single-board microcomputer was developed for use in voltammetric analyses. Operator input of numerous experiment parameters allows any type of voltammetric analysis to be implemented and multiple scans to be run unattended. A three operational amplifier potentiostat is used to control the cell voltage and...
Resource Type:: Dissertation
Full Text:: A microcomputer automated anodic stripping voltammetric

The determination of gasoline and alkyl benzenes in aqueous solution and the development of a remote reaction chamber for fiber optic remote sensing

Creator:: Waddle, Robert D.
Abstract:: The development and optimization of a single-phase derivatization technique for small ring aromatics in water are presented. Also described are the design, optimization and application of a remote reaction chamber for fiber optic sensing. Aqueous solutions of the major aromatic compounds in gasoline are derivatized to o-nitrosophenol-Cu complexes with a...
Resource Type:: Masters Thesis
Full Text:: Privacy J. D. Ingle, Jr. The development and optimization of a single-phase derivatization technique for

Speciation of inorganic arsenic by hydride generation atomic absorption spectroscopy

Creator:: Ikeda, Marcia Sakiko
Abstract:: A sensitive technique for the determination of As(III) and As{V) at μ/L and sub-μg/L concentrations from a single sample aliquot has been developed. This technique is based on the hydride generation atomic absorption (HGAA) spectrophotometry. The hydrides of the arsenic species are generated in a reaction vessel by mixing the...
Resource Type:: Masters Thesis
Full Text:: §qsngDrieeneratiotordc Absorption Spectroscopy Redacted for Privacy Abstract approved: James D. Ingle, Jr. A

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:: Speciation of Trace Metals in Natural Waters Abstract approved : Redacted for privacy James D. Ingle, Jr

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:: Chromatography Abstract approved: Redacted for Privacy James D. Ingle, Jr. An on-line trace enrichment (TE

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:: Radiochemical Separations and Analysis Abstract approved: Redacted for Privacy James -D. Ingle, Jr

Application of flow injection analysis to enzymatic fluorescence kinetic methods

Creator:: Elliott, Colin Bruce
Abstract:: Studies of the use of NADH as the monitored fluorophore for enzymatic fluorescence kinetic methods are discussed. Interference studies for the detection of NADH and the adaptation and optimization of fluorescence kinetic measurements to four serum assays are also described. A microcomputer-controlled flow injection analysis (FIA) system was designed and...
Resource Type:: Dissertation
Full Text:: Enzymatic Fluorescence Kinetic Methods Redacted for Privacy Abstract approved: -- James D. Ingle Jr

ScholarsArchive@OSU

A reaction rate determination of aluminum with a microcomputer-based spectrofluorometer

Design and application of a microcomputer automated multielement flame atomic fluorescence instrument

A critical comparison of methods for the determination of phytoplankton chlorophyll

A microcomputer automated anodic stripping voltammetric analyzer for trace heavy metal speciation

The determination of gasoline and alkyl benzenes in aqueous solution and the development of a remote reaction chamber for fiber optic remote sensing

Speciation of inorganic arsenic by hydride generation atomic absorption spectroscopy

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

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

Microcomputer controlled chemical and radiochemical separations and analysis

Application of flow injection analysis to enzymatic fluorescence kinetic methods

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