Abstract
Cerium oxide (CeO 2) was evaluated as a column packing material for liquid chromatography. A pretreated CeO 2 slurry was made in ethylene glycol and was forced into a stainless steel tube (125 × 4.6 mm) for 60 min at a constant pressure of ca. 550 kg/cm 2. Naphthalene, anthracene, pyrene and chrysene were successfully separated using pure n-hexane as a mobile phase. The column efficiency is approximately 500 theoretical plates. The separation efficiency of the CeO 2 column was compared with a commercial silica gel column. The main advantage of the CeO 2 column was its improved separation efficiency for phenanthrene and pyrene.
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