On the Determination of Specific Retention Volumes on Polymer Stationary Phases

1977 ◽  
Vol 10 (4) ◽  
pp. 864-866 ◽  
Author(s):  
J.-M. Braun ◽  
M. Cutajar ◽  
J. E. Guillet ◽  
H. P. Schreiber ◽  
D. Patterson
Keyword(s):  
Stationary Phases ◽  
Specific Retention Volumes ◽  
Specific Retention ◽  
Retention Volumes

Indirect determination of specific retention volumes in gas chromatography

1984 ◽  
Vol 312 ◽  
pp. 69-74 ◽  
Author(s):  
Elena Fernández-Sánchez ◽  
José Antonio García-Domínguez ◽  
Vicente Menendez ◽  
Enrique Pertierra-Rimada
Keyword(s):  
Gas Chromatography ◽  
Indirect Determination ◽  
Specific Retention Volumes ◽  
Specific Retention ◽  
Retention Volumes

Indirect determination of specific retention volumes in gas chromatography use of the retention indices of McReynolds' samples

1985 ◽  
Vol 333 ◽  
pp. 1-9 ◽  
Author(s):  
Elena Fernández-Sánchez ◽  
José Antonio García-Domínguez ◽  
Vicente Menéndez ◽  
Enrique Pertierra-Rimada
Keyword(s):  
Gas Chromatography ◽  
Retention Indices ◽  
Indirect Determination ◽  
Specific Retention Volumes ◽  
Specific Retention ◽  
Retention Volumes

Micro-packed columns with graphitized thermal carbon black

1982 ◽  
Vol 47 (2) ◽  
pp. 576-581 ◽  
Author(s):  
Ladislav Feltl ◽  
Marcela Antonínová ◽  
Eva Smolková
Keyword(s):  
Carbon Black ◽  
Separation Efficiency ◽  
Packed Column ◽  
Linear Regression Method ◽  
Thermodynamic Quantities ◽  
Graphitized Thermal Carbon Black ◽  
Specific Retention Volumes ◽  
Specific Retention ◽  
Retention Volumes

Two types of column were prepared, conventional packed and micro-packed with Sterling MT graphitized thermal carbon black (GTCB). Comparison demonstrated the advantages of the micro-packed column. The adsorption of C5-C10 alkanes and C4-C10 1-alkenes was studied on these columns in the interval 448.15-488.15 K. The differential heats of adsorption were calculated by the linear regression method from the temperature dependence of the specific retention volumes and the usefulness of the micro-packed column for determination of adsorption thermodynamic quantities was evaluated on the basis of the results. The separation efficiency of the two columns was demonstrated on the separation of a mixture of the geometric isomers of tricyclododecane.

Adsorption of Vapours of Some Organic Compounds on Surface of Iron-Substituted Layered Vanadyl Phosphate

2000 ◽  
Vol 65 (1) ◽  
pp. 47-57 ◽  
Author(s):  
Pavel Hradil ◽  
Jiří Votinský ◽  
Karel Komárek ◽  
Vítězslav Zima ◽  
Jaroslava Kalousová ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Organic Molecules ◽  
Ferric Ions ◽  
Vanadyl Phosphate ◽  
Enthalpy Of Adsorption ◽  
Adsorbent Surface ◽  
Specific Retention Volumes ◽  
Specific Retention ◽  
Retention Volumes ◽  
Chromatographic Measurement

Gas chromatographic measurement of specific retention volumes of vapours of selected groups of organic compounds has been used to determine differential molar enthalpy of adsorption of their molecules on the surface of layered vanadyl phosphate substituted with ferric ions having the composition of [Fe(H2O)]0.20(VO)0.80PO4. Various types of bonds of the molecules to the surface of the layered adsorbent including their probable orientation with respect to the layers have been discussed. It was observed a dependence of the specific peak elution volume and shape of chromatographic peak on the sample size in the cases of those compounds whose molecules are chemically bound to the adsorbent surface. A connection is pointed out between the adsorption strength of the organic molecules on the layered adsorbent and the tendency of the system to undergo intercalation reaction.

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