Determination of traces of carbon dioxide in hydrogen chloride by gas chromatography

1979 ◽  
Vol 12 (8) ◽  
pp. 567-568 ◽  
Author(s):  
H. J. Rath ◽  
D. Schmidt ◽  
J. Wimmer
Keyword(s):  
Carbon Dioxide ◽  
Gas Chromatography ◽  
Hydrogen Chloride

scholarly journals The Use of Cryogenic Temperature Gas Chromatography for the Determination of Carbon Monoxide and Carbon Dioxide in Cigarette Smoke

1972 ◽  
Vol 6 (4) ◽  
Author(s):  
G.P. Morie ◽  
C.H. Sloan
Keyword(s):  
Carbon Dioxide ◽  
Gas Chromatography ◽  
Carbon Monoxide ◽  
Liquid Nitrogen ◽  
Cigarette Smoke ◽  
Cryogenic Temperature ◽  
Chromatographic Method ◽  
Porapak Q ◽  
Gas Chromatographic Method

AbstractA gas chromatographic method for the determination of carbon monoxide and carbon dioxide in cigarette smoke was developed. A column containing Porapak Q packing and a cryogenic temperature programmer which employed liquid nitrogen to cool the column to subambient temperatures was used. The separation of N

DETERMINATION OF RATES OF CHANGE OF POLARIZABILITY FROM RAMAN AND RAYLEIGH INTENSITIES

1953 ◽  
Vol 31 (6) ◽  
pp. 954-961 ◽  
Author(s):  
E. J. Stansbury ◽  
M. F. Crawford ◽  
H. L. Welsh
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Chloride ◽  
Internuclear Distance ◽  
Hydrogen Bromide ◽  
Rate Of Change ◽  
Mean Values ◽  
Rates Of Change

Mean values of the rate of change of polarizability with respect to internuclear distance were determined for several molecules from the ratio of Raman and Ray-leigh intensities in the gas. The values obtained are: hydrogen, 1.2 × 10−16 cm.2; deuterium, 1.1; hydrogen chloride, 1.0; hydrogen bromide, 1.2; nitrogen, 1.6; oxygen, 1.4; carbon dioxide (ν1 vibration), 4.2; methane (ν1 vibration), 4.1. It is noteworthy that the values for the partially ionic molecules, hydrogen chloride and hydrogen bromide, are nearly the same as for hydrogen and deuterium.

scholarly journals Cave Air Analysis with Gas Chromatography Mass Spectrometry

2021 ◽  
Author(s):  
Gyula Nyerges ◽  
Dénes Szieberth ◽  
Judit Mátyási ◽  
József Balla
Keyword(s):  
Mass Spectrometry ◽  
Carbon Dioxide ◽  
Gas Chromatography ◽  
Carbon Monoxide ◽  
Stationary Phase ◽  
Gas Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Cave System ◽  
Validation Parameters

Gas chromatography (GC) is a frequently used analytical method for the determination of permanent and organic air components. The analysis usually needs two different columns in practice. The molecular sieve stationary phase can separate oxygen, nitrogen and carbon monoxide, but irreversibly adsorbs carbon dioxide and water. Porapak type columns are applicable for the measurement of carbon dioxide, however oxygen, argon, nitrogen and carbon monoxide are co-eluted. Usually these two types of columns are used in parallel for the determination. Carboxen stationary phase can separate carbon monoxide and carbon dioxide, but argon, oxygen and nitrogen are co-eluted. Thermal conductivity detector (TCD) and flame ionization detector (FID) are used commonly together for the determination of the separated components. TCD is applied for permanent gas analysis whereas FID – combined with a methanizer – is used for the detection of carbon monoxide, carbon dioxide and light hydrocarbons. Mass spectrometer (MS) is also a potential detector, because the properly chosen fragment ions can increase the selectivity.We developed a method for the determination of air components, using only one column and one detector. This method is suitable for the measurements by combining the advantages of the carboxen column with mass spectrometry. The validation parameters of the method were in the acceptable interval, so this method is able to determine the air components. The application of this technique to the analysis of cave air provided valuable information to the exploration of the Molnár János cave system.

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