SUPERCRITICAL-FLUID CHROMATOGRAPHIC DETECTION BY USE OF A PARALLEL-FLOW RESTRICTOR

In supercritical fluid chromatography (SFC), the role of the flow rest rictor is not only to maintain supercritical conditions throughout the column but also to provide the necessary interface between the column and the detector. In the previous paper,(1) a new type of flow restri ctor called parallel flow restrictor was introduced. At that time, the parallel flow restrictor was used only for the flow control. In this paper, the parallel flow restrictor was used not only for the flow con trol but also for the interface to the second detector. A supercritica l fluid chromatographic system with a combination of two detectors bas ed on physically different principles, flame ionization and UV absorpt ion, was used.