Abstract
Homologous series of alkylbenzyldimethylammonium chlorides and alkylpyridinium halides with C 10-C 18 alkyl groups were separated by high-performance liquid chromatography, employing porous micro-spherical poly(styrene-divinyl-benzene) gel as the stationary phase. The recommended conditions are as follows: column, 500 mm × 4 mm I.D.; mobile phase, 0.5 M perchloric acid in methanol; column temperature, 30°. The logarithm of the capacity factor for each homologous series was directly proportional to the alkyl chain length. The reciprocal of the column temperature was also directly proportional to the logarithm of the capacity factor of each constituent. The results might be explainable in terms of liquid-liquid partition chromatography.
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