Gas chromatographic determination of carbon dioxide in non-fat dry milk during non-enzymic browning reaction

1990 ◽  
Vol 53 (1) ◽  
pp. 93-99 ◽  
Author(s):  
David B Min ◽  
Sang-Hwa Lee
Keyword(s):  
Carbon Dioxide ◽  
Chromatographic Determination ◽  
Browning Reaction ◽  
Dry Milk ◽  
Enzymic Browning

Gas-Solid Chromatographic Determination of Oxygen, Nitrogen, Carbon Dioxide, Ethylene, and Nitrous Oxide at Ambient Temperature

1973 ◽  
Vol 56 (1) ◽  
pp. 119-123
Author(s):  
Martin J Finkelson
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Ambient Temperature ◽  
Molecular Sieve ◽  
Internal Standard ◽  
Chromatographic Determination ◽  
Digital Integrator ◽  
In Series ◽  
Peak Areas

Abstract A gas-solid chromatographic method is described for the separation and determination of 5 medicinal gases at ambient temperature, using 2 gas chromatographic columns, Porapak Q and Molecular Sieve 13X, operated in series with a 6-port thermal conductivity detector and I recorder. An electronic digital integrator is used for calculating peak areas. Data on retention time, linearity, reproducibility of injection, and comparison with absorption methods are presented. Analytical results for oxygen, nitrogen, carbon dioxide, ethylene, and nitrous oxide are attainable within 1.0% without the use of an internal standard.

Gas-Solid Chromatographic Determination of Carbon Monoxide and Carbon Dioxide in Cigarette Smoke

1974 ◽  
Vol 57 (1) ◽  
pp. 1-7
Author(s):  
Arthur D Horton ◽  
Michael R Guerin
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Gas Phase ◽  
Confidence Intervals ◽  
Cigarette Smoke ◽  
Chromatographic Determination ◽  
Standard Errors ◽  
Sampling Techniques ◽  
Relative Standard

Abstract Gas-solid chromatographic methods are presented for the determination of carbon monoxide, carbon dioxide, or both simultaneously in the gas phase of cigarette smoke. The methods are optimized to allow quantitative determinations on the entire gas phase delivery of the cigarettes rather than single puffs and to allow the use of small numbers of cigarettes. Shortcomings of several sampling techniques are defined, and evidence is presented supporting the utility of Saran bag sampling and containment. Carbon monoxide and carbon dioxide analyses may be performed with relative standard errors of 2—3% and relative confidence intervals (95%) of 6—9% for determinations involving 4—6 cigarettes.

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