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The efficiency (plate number per unit time) and elution power (range of n-alkanes) of packed capillary SFC and SGC using CO 2 as the mobile phase were compared. A higher plate number per unit time was obtained in SGC than in SFC using the same column under the same applied conditions. SGC is more suitable for fast separations than SFC. The solvating ability of the mobile phase, at the column...
In this paper, the physicochemical properties of CO 2 , including viscosity, solute diffusivity, and solvating power, and the effects of these properties on the performance (mobile phase flow transport, column efficiency, and solute retention) of packed capillary column solvating gas chromatography (SGC) were studied. It was found that (a) at high temperature (> 90 °C), the flow properties...
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