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New Liquid Phases for the Gas Chromatographic Separation of Strong Bases on Capillary Columns
1964
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The current practice of pretreating the solid support with free alkali to increase separation efficiency for basic compounds proved to be unsuitable for capillary columns. Instead of this, homogenous organic materials of high base strength are required. We found polyethylene imine (PEI) and polypropylene imine (PPI) to be very efficient as liquid phases of capillary columns for the separation of bases. The preparation of polymers is mentioned. Silanization or acetylation of the free hydroxyl
doi:10.5167/uzh-155000
fatcat:rqhiycdmijextnxsoabqineysa