Gas-phase Adsorption Chromatographic Determination of Thermochemical Data and Empirical Methods for their Estimation

A simple, rapid method for determining dissolved inorganic carbon in water is described. A 20-cm3 sample of water is drawn into a 50-cm3 polypropylene syringe and acidified by injection of 1 cm3 of dilute sulphuric acid. Twenty-nine cubic centimeters of helium at atmospheric pressure is injected into the syringe followed by 10 sec of manual agitation to partition CO2 between gas and liquid phase. The gas phase containing 60% of CO2 from the sample is then analyzed by gas chromatography. This method has been used to determine dissolved inorganic and organic carbon in Canadian Shield waters and to determine total carbonates in sediments.

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Thermochemical Data from Gas-Phase Adsorption and Methods of Their Estimation

The Chemistry of Superheavy Elements ◽

10.1007/978-3-642-37466-1_7 ◽

2013 ◽

pp. 375-413 ◽

Cited By ~ 7

Author(s):

Robert Eichler ◽

Bernd Eichler

Keyword(s):

Gas Phase ◽

Thermochemical Data ◽

Gas Phase Adsorption

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High Performance Liquid Chromatographic Determination of Selected Gas Phase Carbonyls in Tobacco Smoke

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/66.1.8 ◽

1983 ◽

Vol 66 (1) ◽

pp. 8-12

Author(s):

Delmar L Manning ◽

Michael P Maskarinec ◽

Roger A Jenkins ◽

Amos H Marshall

Keyword(s):

Gas Phase ◽

Tobacco Smoke ◽

High Performance ◽

Chromatographic Determination ◽

High Performance Liquid Chromatographic ◽

Published Data ◽

Liquid Chromatographic Determination ◽

Derivatizing Reagent ◽

Liquid Chromatographic

Abstract Low molecular weight gas phase carbonyls in tobacco smoke are separated as 2,4-dinitrophenylhydrazones and determined by reverse phase high performance liquid chromatography. A trapping procedure is used whereby the gas phase carbonyls are reacted with the derivatizing reagent in a closed system. The deliveries of acetaldehyde and acrolein are compared with published data. In addition, propionaldehyde and acetone deliveries of selected cigarettes are reported.

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

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/57.1.1 ◽

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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