Index Catalog // ScholarsArchive@OSU

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:: Extraction 10 Ion Exchange and Chromatographic Techniques 11 High Pressure Liquid Chromatography 13

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:: absorption techniques 11 Multielement atomic emission techniques 15 Multielement atomic fluorescence

Development of automated flow injection apparatus and a novel flow cell for chemi- and bioluminescence determinations

Creator:: Gander, Stuart C.
Abstract:: A practical and versatile instrument has been developed both to optimize the chemistry of bio- and chemiluminescence reactions and to measure ultra-trace quantities of associated analytes. The instrument consists of a pneumatic flow injection system linked to a detection cell and a signal processing and readout system. The disk-like cell...
Resource Type:: Masters Thesis
Full Text:: , the chemistry of marine bacteria biolumin- escence was optimized for the determination of cis-11

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:: Injection Analysis 11 Introduction 11 Theory and Principles of FIA 12 Recent Innovations in FIA

The development and characterization of miniature spectrometers for measuring the redox status of environmental samples

Creator:: Cantrell, Kevin
Abstract:: A spectrometer, here denoted a Simple, Low-power, Inexpensive. Microcontroller-based or SLIM spectrometer. was developed that exploits the small size and low cost of solid-state electronic devices. This approach results in customizable spectrometers that are considerably less expensive and smaller than traditional instrumentation. The performance of the SLIM spectrometer was evaluated...
Resource Type:: Dissertation
Full Text:: Doctor of Philosophy in Chemistry presented on June 11 2001 . Title: The Development and

Oxidation of ethanol and phenols with permanganate for chemiluminescence analysis

Creator:: Al-Mutawah, Jameela Isa
Resource Type:: Masters Thesis
Full Text:: injecting Mn(IV) solution. 66 11. CL signal of Pg with double injection of permanganate solution. 68

Fiber optic sensors and spectrometry for the detection of volatile gem-polyhalogenated hydrocarbons

Creator:: Louch, Jeff
Abstract:: A fiber optic fluorometer utilizing a double-fiber optic probe was constructed. The absolute fluorescence signal and effective collection efficiency are approximately one fifth those of typical cuvette fluorometers and agree with those predicted by theory. A quinine sulfate calibration curve shows linearity from a detection limit of 10 pg/mL to...
Resource Type:: Dissertation
Full Text:: detection limit for chloroform is 11 ng/mL and the method was shown to be suitable for the analysis of tap

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:: Chemical Equilibrium Models 9 Experimental Techniques 11 Measurement Schemes 21 Determination of Trace

Studies of chemical speciation of trace metals in natural waters using an on-line electrochemical cell and ion exchange system

Creator:: Sule, Pushkar Anant
Resource Type:: Masters Thesis
Full Text:: DETERMINING CHEMICAL SPECIATION 7 Introduction 7 Anodic Stripping Voltammetry 8 Ion Exchange Techniques 11

Microcomputer-based fluorometric kinetic determination of ascorbic acid and flow injection analysis methods for interference correction and kinetic determinations based on the peak profile

Creator:: Chung, Hyung-Keun
Resource Type:: Dissertation
Full Text:: curves for the determination of AA with a 10-s computational time. 82 CHAPTER V V.1. Dependence of Sr(t

ScholarsArchive@OSU

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

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

Development of automated flow injection apparatus and a novel flow cell for chemi- and bioluminescence determinations

Application of flow injection analysis to enzymatic fluorescence kinetic methods

The development and characterization of miniature spectrometers for measuring the redox status of environmental samples

Oxidation of ethanol and phenols with permanganate for chemiluminescence analysis

Fiber optic sensors and spectrometry for the detection of volatile gem-polyhalogenated hydrocarbons

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

Studies of chemical speciation of trace metals in natural waters using an on-line electrochemical cell and ion exchange system

Microcomputer-based fluorometric kinetic determination of ascorbic acid and flow injection analysis methods for interference correction and kinetic determinations based on the peak profile

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