Cold trap increases sensitivity of gas chromatography
Cold trap concentrates oxygen and argon to determine trace amounts /as low as 0.1 ppm/ in helium by gas chromatography.
Garrard, G. G.↗
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Results for “CHROMATOGRAPHY”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Analyses of pyrimidine and purine bases by a combination of paper chromatography and time of flight mass spectrometry
Paper chromatography and mass spectrometry for analyses of pyrimidine and purine bases
Fuse, K.↗
Application of gas chromatography in manned space flight.
Gas chromatography system for trace contaminants detection in space cabin atmosphere and suit gas during manned space flight
Lem, J. D., Jr.↗
Application of combined chromatography-mass spectrometry to the analysis of aromatic hydrocarbons formed by pyrolysis of methane.
Capillary gas chromatography mass spectrometry combined by molecular separators applied to methane pyrolysis product analysis
Han, J.↗
Determination of the configuration of asymmetric compounds by gas chromatography of diastereoisomers.
Asymmetric compounds configuration determination by gas chromatography of diastereoisomers
Halpern, B.↗
Analyses of complex mixtures of hydrocarbons by time-of-flight mass spectrometry/open tube chromatography.
Complex hydrocarbon mixture analysis by time of flight mass spectrometry and open tube chromatography, discussing three improvements
Hayatsu, R.↗
Comparative chromatography of chloroplast pigment
Methods for isolation of low concentration pigments of the cocklebur species are described. The methods entail two step chromatography so that the different sorption properties of the various pigments in varying column parameters can be utilized. Columnar and thin layer methods are compared. Many conditions influence separability of the chloroplasts.
Grandolfo, M.↗
Evaluating dispersion in gel permeation chromatography. I.
Dispersion in gel permeation chromatography, noting eddy diffusion in chromatographic columns
Billmeyer, F. W., Jr.↗
The use of /-/-menthyl chloroformate in the optical analysis of asymmetric amino and hydroxyl compounds by gas chromatography.
Reagent menthyl chloroformate use in optical analysis of asymmetric amino and hydroxyl compounds by gas chromatography
Halpern, B.↗
Analyses of pyrimidine and purine bases by a combination of paper chromatography and time- of-flight mass spectrometry.
Pyrimidine and purine bases analysis by time of flight mass spectrometry and paper chromatography
Fuse, K.↗
Organic analysis by pyrolysis-gas chromatography-mass spectrometry - A candidate experiment for the biological exploration of Mars.
Bioorganic comparative analysis of desert soils, Precambrian shales and meteorites by automated pyrolysis-gas chromatography-mass spectrometry system for future Mars soil analysis
Shulman, G. P.↗
Gas-liquid chromatography of protein amino acids - Separation factors.
Gas-liquid chromatography of natural protein amino acids in biological substances, noting separation characteristics
Gehrke, C. W.↗
Quantitative gas-liquid chromatography of sulfur containing amino acids.
Quantitative gas-liquid chromatography of sulfur amino acids trimethylsilyl derivatives
Gehrke, C. W.↗
Quantitative determination of N-acetylneuraminic acid by gas-liquid chromatography.
Quantitative analysis for N-acetylneuraminic acid by gas-liquid chromatography using trimethylsilyl derivative
Gehrke, C. W.↗
The detection of optical asymmetry in biogenic molecules by gas chromatography for extraterrestrial space exploration - Sample processing studies.
Life detection for space missions based on detecting optical asymmetry in biogenic molecules by gas chromatography involving diastereomeric esters synthesis
Miyamoto, A. K.↗
Determination of the water-soluble dinitrophenylamino acids by ion-exchange chromatography.
Free lysine and dinitrophenyl /DNP/ derivatives determined quantitatively by ion exchange chromatography
Bugna, E.↗
Acidic components of Green River shale identified by a gas chromatography-mass spectrometry-computer system.
Acid fraction extraction of Green River shale identified by gas chromatography-mass spectrometry-computer system, noting trimethyl pentadecanoic acid
Biemann, K.↗
Gel permeation chromatography of nominally linear aliphatic polyesters.
Gel permeation chromatography of nominally linear aliphatic polyesters, using tetrahydrofuran solvent at 37 degrees C
Billmeyer, F. W., Jr.↗