HIGH-TEMPERATURE OPEN-TUBULAR CAPILLARY COLUMN ION CHROMATOGRAPHY

Construction and preliminary characterization of open tubular capillar y column ion chromatography is described. Increasing the column temper ature resulted in a dramatic increase of the column efficiency. Two di fferent kinds of columns were developed and investigated for capillary ion chromatography. One was a 50 mu m i.d. fused silica capillary tub ing, and another was a 50 mu m i.d. silica capillary coated with Latex particles (diameter: about 360nm). Both columns showed good separatio ns of inorganic anions, although the capillary coated with Latex parti cles showed much larger retention than a bale silica capillary.