Diffusion coefficients of gases in liquids and partition coefficients in gas-liquid interphases by reversed-flow gas chromatography

Reversed-Flow Gas Chromatography as a Tool for Studying the Interaction between Aroma Compounds and Starch

“…Determination of Diffusion Coefficients of AromaCompounds' Vapors into the Carrier Gas. By plotting ln H against time, t, when empty vessel was used, a diffusion band was produced, and the diffusion coefficients, D z , of the vapors of aroma compounds into the carrier gas were calculated from the slope of the linear part of the diffusion band after the maximum according to the equation:29 …”

Reversed-Flow Gas Chromatography as a Tool for Studying the Interaction between Aroma Compounds and Starch

“…Determination of Diffusion Coefficients of AromaCompounds' Vapors into the Carrier Gas. By plotting ln H against time, t, when empty vessel was used, a diffusion band was produced, and the diffusion coefficients, D z , of the vapors of aroma compounds into the carrier gas were calculated from the slope of the linear part of the diffusion band after the maximum according to the equation:29 …”

Transport Phenomena and Evaporation on Interface of Gas-Liquid by Reversed-Flow Gas Chromatography

“…Many publications using this technique have been published, this may include the determination of gas diffusion coefficients in binary and ternary gas mixture [5][6][7][8] , determination of adsorption equilibrium constant 9 , determination of rate constants, activation parameters as well as determination of catalytic conversion of reactants into products for various important surface catalyzed reactions [13][14][15]20 and determination of Flory-Huggins interaction parameters and solubility parameters in polymer-solvent system 16 . Besides that, RF-GC also plays an important role in determination of rate coefficients for evaporation of liquids 21 , determination of mass transfer and partition coefficients across gas-liquid and gas-solid interfaces [22][23][24][25] and in determination of adsoption energies, local monolayer capacities and local adsorption isotherms 26,27 . Furthermore RF-GC also has being used in determination of rate constant for sorption of various gases on bimetallic catalyst 28,29 and in determination of activity coefficient 20 .…”

“…Other experiment considering gas-liquid interface by RF-GC: The interface of the gas-liquid contributes to the gaseous pollutant(s) between the atmospheric and water environment 23 . Since the phenomena employs a great significance towards the environment chemistry 42 , the researchers must be defined about the research that they want to explore whether to study the solubilities of air pollutant in water or the ability of the liquid pollutant to migrate from water to environment.…”

Interaction studies of vinychloride with liquid foods by gas chromatography

“…It has been shown [6,20] that each sample peak produced by a short flow reversal is symmetrical and its maximum height h from the ending baseline, when the lower part L2 of the diffusion column is empty, is given by:…”

Reversed-Flow Gas Chromatography as a Tool for Studying the Interaction between Aroma Compounds and Starch

“…Determination of Diffusion Coefficients of AromaCompounds' Vapors into the Carrier Gas. By plotting ln H against time, t, when empty vessel was used, a diffusion band was produced, and the diffusion coefficients, D z , of the vapors of aroma compounds into the carrier gas were calculated from the slope of the linear part of the diffusion band after the maximum according to the equation:29 …”

Transport Phenomena and Evaporation on Interface of Gas-Liquid by Reversed-Flow Gas Chromatography

“…Many publications using this technique have been published, this may include the determination of gas diffusion coefficients in binary and ternary gas mixture [5][6][7][8] , determination of adsorption equilibrium constant 9 , determination of rate constants, activation parameters as well as determination of catalytic conversion of reactants into products for various important surface catalyzed reactions [13][14][15]20 and determination of Flory-Huggins interaction parameters and solubility parameters in polymer-solvent system 16 . Besides that, RF-GC also plays an important role in determination of rate coefficients for evaporation of liquids 21 , determination of mass transfer and partition coefficients across gas-liquid and gas-solid interfaces [22][23][24][25] and in determination of adsoption energies, local monolayer capacities and local adsorption isotherms 26,27 . Furthermore RF-GC also has being used in determination of rate constant for sorption of various gases on bimetallic catalyst 28,29 and in determination of activity coefficient 20 .…”

“…Other experiment considering gas-liquid interface by RF-GC: The interface of the gas-liquid contributes to the gaseous pollutant(s) between the atmospheric and water environment 23 . Since the phenomena employs a great significance towards the environment chemistry 42 , the researchers must be defined about the research that they want to explore whether to study the solubilities of air pollutant in water or the ability of the liquid pollutant to migrate from water to environment.…”

Interaction studies of vinychloride with liquid foods by gas chromatography

“…It has been shown [6,20] that each sample peak produced by a short flow reversal is symmetrical and its maximum height h from the ending baseline, when the lower part L2 of the diffusion column is empty, is given by:…”

Reversed-Flow Gas Chromatography as a Tool for Studying the Interaction between Aroma Compounds and Starch

“…Determination of Diffusion Coefficients of AromaCompounds' Vapors into the Carrier Gas. By plotting ln H against time, t, when empty vessel was used, a diffusion band was produced, and the diffusion coefficients, D z , of the vapors of aroma compounds into the carrier gas were calculated from the slope of the linear part of the diffusion band after the maximum according to the equation:29 …”

Transport Phenomena and Evaporation on Interface of Gas-Liquid by Reversed-Flow Gas Chromatography

“…Many publications using this technique have been published, this may include the determination of gas diffusion coefficients in binary and ternary gas mixture [5][6][7][8] , determination of adsorption equilibrium constant 9 , determination of rate constants, activation parameters as well as determination of catalytic conversion of reactants into products for various important surface catalyzed reactions [13][14][15]20 and determination of Flory-Huggins interaction parameters and solubility parameters in polymer-solvent system 16 . Besides that, RF-GC also plays an important role in determination of rate coefficients for evaporation of liquids 21 , determination of mass transfer and partition coefficients across gas-liquid and gas-solid interfaces [22][23][24][25] and in determination of adsoption energies, local monolayer capacities and local adsorption isotherms 26,27 . Furthermore RF-GC also has being used in determination of rate constant for sorption of various gases on bimetallic catalyst 28,29 and in determination of activity coefficient 20 .…”

“…Other experiment considering gas-liquid interface by RF-GC: The interface of the gas-liquid contributes to the gaseous pollutant(s) between the atmospheric and water environment 23 . Since the phenomena employs a great significance towards the environment chemistry 42 , the researchers must be defined about the research that they want to explore whether to study the solubilities of air pollutant in water or the ability of the liquid pollutant to migrate from water to environment.…”

Interaction studies of vinychloride with liquid foods by gas chromatography

“…It has been shown [6,20] that each sample peak produced by a short flow reversal is symmetrical and its maximum height h from the ending baseline, when the lower part L2 of the diffusion column is empty, is given by:…”