Abstract
UNTIL now pressure variation has been treated with great care in gas chromatography. Most experiments are carried out in equilibrium conditions, with more or less carefully controlled inlet pressure, and recently interest has been focused on the use of pressure programming1,2. In spite of the development of an exponential pressure programmer3 only slow rates of pressure programming have been used. For theoretical as well as practical reasons, we suggest the use of extremely high programme rates, so that when the injection is made, the inlet pressure is increased almost instantaneously from a value near that of the outlet pressure up to the final value. Clearly, the duration of the programme will be much less than that of the analysis itself. This method has, however, distinct advantages over the more conventional ones.
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JACOB, L., GUIOCHON, G. Step Increase of the Carrier Gas Inlet Pressure in Gas Chromatography. Nature 213, 491–492 (1967). https://doi.org/10.1038/213491a0
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DOI: https://doi.org/10.1038/213491a0
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