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Lawrence C. Thomas

Researcher at Oregon State University

Publications -  12
Citations -  87

Lawrence C. Thomas is an academic researcher from Oregon State University. The author has contributed to research in topics: Gas chromatography & Absorbance. The author has an hindex of 7, co-authored 12 publications receiving 86 citations.

Papers
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Journal ArticleDOI

Detection of gas chromatography eluates by simultaneous absorbance and fluorescence measurements

TL;DR: In this article, a deuterium source is transmitted both to and from a heated flow-through cell via high-temperature quartz fiber optics bundles, and optical filters are used for selective detection of aromatic compounds.
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Optimized flow programming for temperature-programmed gas chromatography

TL;DR: In this paper, a flow-rate optimization system for gas chromatography is described for use with temperature programming, where a mass-flow meter is monitored by a mass flow meter and adjusted by a microcomputer according to a specified temperature vs. flow rate format.
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Long pathlength ultraviolet absorbance detection for gas chromatography with concurrent fluorescence measurement

TL;DR: In this paper, a 167mm cell was proposed for GC eluates with up to tenfold improvements in limits of detection of gas chromatography (GC) eluates by UV absorbance relative to previous detectors, and the concurrent measurement of UV fluorescence in the same cell provided highly selective detection for multi-ring polynuclear aromatics.
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Ultraviolet spectrometric detection for gas chromatography of polynuclear aromatic compounds with repetitive spectral scans using absorbance and concurrent fluorescence measurements.

TL;DR: A computer-controlled ultraviolet spectrometric detection system for gas chromatography (GC) is described which acquires absorption spectra of gas-phase GC effluents at rates up to two 62-nm scans per s, providing additional qualitative information.