Abstract
RECENT developments in the field of gas chromatography have included the measurement of gas–solid adsorption isotherms from the retention data1–3. A peak obtained from a single injection is used to calculate a series of retention volumes, ranging from the highest partial pressure at the peak maximum to zero partial pressure where the diffuse edge coincides with the base line. These retention volumes are plotted against the corresponding values of partial pressure, also obtained from the chromatographic peak, to give the first derivative of the adsorption isotherm as described by Cremer and Huber1. The isotherm is obtained from it by graphical integration.
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References
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Kipping, P. J., Jeffery, P. G., and Savage, C. A., R. and D. (in the press).
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KIPPING, P., WINTER, D. Measurement of Adsorption Isotherms by a Gas Chromatographic Technique. Nature 205, 1002–1003 (1965). https://doi.org/10.1038/2051002a0
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DOI: https://doi.org/10.1038/2051002a0
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