Negative temperature gradients for density programming in supercritical fluid chromatography |
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| Authors: | Bernd W Wenclawiak |
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| Institution: | (1) Department of Chemistry, The University of Toledo, 2801 W. Bancroft Street, 43606 Toledo, OH, USA |
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| Abstract: | Summary Negative temperature programming using one to three ramps can be utilized to perform density programs in capillary and packed column supercritical fluid chromatography. This method is a less costly alternative to pressuredensity programming. A three step procedure is suggested to optimize the temperature-density program. The separation of wax and crude oil samples is shown.
Negative Temperaturgradienten zur Dichteprogrammierung bei der Chromatographie mit überkritischen fluiden Phasen |
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