Index Catalog // ScholarsArchive@OSU

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:: Language for Calling BMDP-AR and the Subroutine of the Fit Equation 43 Appendix D: A Sample of the

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:: of trace aqueous solutions AN ABSTRACT OF THE THESIS OF ROBERT RAYMOND CLAEYS for the Ph. D

A multivariate statistical approach to identifying organic compounds using an oscillating plasma glow discharge detector for gas chromatography

Creator:: Smith, Diane Lynn
Abstract:: An oscillating plasma glow discharge detector for gas chromatography is used to obtain fingerprint information about an analyte by combining both the average cell current and oscillation frequency signals. Five homologs each of the n-alkanes, 1-alkenes, 1-alkynes, 2-ketones and aldehydes are studied. Although triplicate determinations had some scatter due to...
Resource Type:: Dissertation
Full Text:: -alkane frequency 40 and current peak responses: column, 3% OV-101 on Chromosorb W-HP 80/100 mesh; carrier

Classification of stationary phases in gas chromatography

Creator:: Chong, Elee Elizabeth
Abstract:: Ultraviolet spectroscopy and dispersive solubility parameters correlated to the ratios of retention times have proven valuable in classification of gas chromatography stationary phases by the donor-acceptor properties. Iodine was directly dissolved into stationary phases and the absorption frequency shift of complexes was correlated with the carbon tetrachloride/chloroform retention ratio on...
Resource Type:: Masters Thesis
Full Text:: H basicity Ac acidity v CT the charge-transfer absorption frequency I d the vertical ionization

The obstructive factor in gas chromatography

Creator:: Thumneum, Pornpan
Abstract:: The study of the obstructive factor by Hawkes (11) showed a relation between the obstructive factor and velocity using a continuous method. Later, Bowers and Hawkes (12) developed a similar method with some improvements in the apparatus and found out that the obstructive factor was not flow dependent. This study...
Resource Type:: Masters Thesis
Full Text:: inversely pro- portional to the mobile phase diffusion coefficient Dm. 2 H = wd P v/D m (17) where w is

Fast gas chromotography

Creator:: Dandeneau, Raymond Dale
Resource Type:: Dissertation
Full Text:: were found to increase in proportion to d -1/2 for decreasing d with column length held constant

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:: where W is a dimensionless constant, and D is diffusion in the bulkm mobile phase. It can be seen that

The identification and quantitation of complex polycyclic aromatic hydrocarbon mixtures in environmental samples using comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry

Creator:: Manzano, Carlos A.
Abstract:: Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous contaminants and are mostly products of the incomplete combustion of organic material. PAHs are often found in environmental samples as a complex mixture of isomers. In addition, the same sources that produce complex PAH mixtures also produce other poorly characterized mixtures of organic compounds,...
Resource Type:: Dissertation
Full Text:: compounds : biology. Springer: Berlin [u.a.], 1998. 22. Jia, Y.; Stone, D.; Wang, W.; Schrlau, J.; Tao, S

Solute-solvent interactions in gas chromatography

Creator:: Chan, Edwin Ming Yeung
Resource Type:: Masters Thesis
Full Text:: . However, data in squalane solumn are unreliable. D. H. Desty and W. T. Swanton (10) made an effort to

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:: . Nozzle Interface 47 D. Applications of Supersonic Expansions to the Fluorescence Determination of PNAs

ScholarsArchive@OSU

The diffusion coefficient of propane in helium

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

A multivariate statistical approach to identifying organic compounds using an oscillating plasma glow discharge detector for gas chromatography

Classification of stationary phases in gas chromatography

The obstructive factor in gas chromatography

Fast gas chromotography

Slow processes in gas-solid chromatography

The identification and quantitation of complex polycyclic aromatic hydrocarbon mixtures in environmental samples using comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry

Solute-solvent interactions in gas chromatography

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

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