Index Catalog // ScholarsArchive@OSU

Classification of stationary liquids in gas chromatography by infrared spectrophotometry

Creator:: De Briceno, Maria Betania Orduz
Abstract:: A classification of stationary liquids by infrared spectroscopy to evaluate the polarity was made using the solvent effect technique. The infrared C-Cl absorption frequency shift was measured for solutions of 1-chlorohexane dissolved in each stationary phase. These frequency shifts were correlated to the relative retention times of 1-octene/n-octane, trans-2-octene/n-octane and...
Resource Type:: Masters Thesis
Full Text:: correlated to the number of carbon atoms and the slopes calculated by linear regression. The order obtained

The development of a high spectral-resolution laser-excited molecular fluorescence system and its application to gas chromatography and the determination of polynuclear aromatic hydrocarbons

Creator:: Hein, Scott J.
Abstract:: A high-spectral resolution laser-excited molecular fluorescence system was developed that utilizes a pulsed supersonic expansion to simplify the fluorescence excitation spectra of large, gas-phase aromatic molecules diluted in an excess of a monatomic gas. A microcomputer was used to control and synchronize the instrumental components, which included a Chromatix CMX-4...
Resource Type:: Dissertation
Full Text:: used to calculate a detection limit of 6 ng. In addition, the excellent selectivity provided by the

Solute-solvent interactions in gas chromatography

Creator:: Chan, Edwin Ming Yeung
Resource Type:: Masters Thesis
Full Text:: differences are proved to be unsuitable. However the polarity constants for a number of organic compounds

The diffusion coefficient of propane in helium

Creator:: Tang, Fa-tai
Abstract:: A specially designed gas chromatograph with both TCD and FID has been tested for the measurement of the diffusion coefficients of methane and propane in helium. Knox's arrested elution technique(⁴) was used and yielded a value of 0.6431 cm²/sec averaged with the value obtained by Yang and Hawkes(⁷). Values of...
Resource Type:: Masters Thesis
Full Text:: Base 21 6. Assembled View of Detector 22 7. Stream Splitter 23 8. -Log D12 vs. Log T for the C3H8-He

Slow processes in gas-solid chromatography

Creator:: Burns, Walter Frederick
Abstract:: Gas-solid chromatography often has asymmetrical elution peaks. This is attributed to nonlinear isotherms, multi-energy adsorption sites, and slow processes. This study utilized a stopflow gas chromatograph with various NaOH and NaCl modified aluminas as adsorbents and methane as adsorbate to determine the influence of surface area and pore volume distribution...
Resource Type:: Masters Thesis
Full Text:: . INTRODUCTION 1 II. THEORY 5 A. Chromatographic Process 5 B. Multi-energy Adsorption Sites 6 C. Surface Pore

A quadratic programming routine for the statistical analysis of gas chromatographic data

Creator:: Elliott, Stanley Claud, Jr
Abstract:: A quadratic programming method was developed for the statistical analysis of gas chromatographic data. The method was applied to three types of flavor extracts, peppermint, hops and brewed tea. The brewed tea data had to be abandoned because of the singularity of its coveriance matrix. In all cases tried the...
Resource Type:: Masters Thesis
Full Text:: 6 7 8 9 5 Tea data as received. 10 6 Reduced tea data. 12 7 Mean vectors for hop oils. 13 8

Acidity and basicity measurements of some silicone gas chromatographic liquid stationary phases

Creator:: Miller, Gary J.
Resource Type:: Masters Thesis
Full Text:: station- ary phases. Most notable among these are the work of Kovats, 1-4 Rohrschneider, 5 ' 6 and

Determination of chlorinated hydrocarbons by response factor calibration

Creator:: Ramus, Terry Lee
Resource Type:: Dissertation
Full Text:: () represent means obtained from replicated sample injections. b) log-log regression line (---). 58 6. Log-log

Fast gas chromotography

Creator:: Dandeneau, Raymond Dale
Resource Type:: Dissertation
Full Text:: . THEORY OF FAST GAS CHROMATOGRAPHY 6 A. Background 6 B. Fundamental Equations 7 The Flow Equations 10

Mass-flow control system utilizing flow-feedback for gas chromatography

Creator:: Dodo, Gerald Haruo
Abstract:: A unique mass-flow control system for the carrier gas in gas chromatography is described and evaluated. Carrier gas flow is controlled by a flow sensor, feedback electronics, a flow-control valve and a microcomputer. The flow-rate is monitored by a mass-flow meter by this system and the flow is adjusted in...
Resource Type:: Masters Thesis
Full Text:: 5 Flow Programming Systems 6 Mass-Flow Meters for Flow Control 11 II. THE FLOW CONTROL SYSTEM FOR

ScholarsArchive@OSU

Classification of stationary liquids in gas chromatography by infrared spectrophotometry

The development of a high spectral-resolution laser-excited molecular fluorescence system and its application to gas chromatography and the determination of polynuclear aromatic hydrocarbons

Solute-solvent interactions in gas chromatography

The diffusion coefficient of propane in helium

Slow processes in gas-solid chromatography

A quadratic programming routine for the statistical analysis of gas chromatographic data

Acidity and basicity measurements of some silicone gas chromatographic liquid stationary phases

Determination of chlorinated hydrocarbons by response factor calibration

Fast gas chromotography

Mass-flow control system utilizing flow-feedback for gas chromatography

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