Abstrakt
An overview of the existing methods for minimization of the analysis time in gas chromatography (GC) is presented and a new system for fast temperature programming and very fast cooling down is evaluated. In this study, a system of coaxial tubes, a heating/cooling module (HC-M), was developed and studied with a capillary column placed inside the HC-M.
The module itself was heated by a GC oven and cooled down by an external cooling medium. The HC-M was heated at rates of up to 330 degrees C min(-1) and cooled at the rate of 6000 degrees C min(-1).
The GC system was prepared for the next run within a few seconds. The HC-M permits good separation reproducibility, comparable with that of a conventional GC, expressed in terms of relative retention times and peak areas of analytes reproducibilities.
The HC-M can be used within any commercial gas chromatograph. (c) 2008 Institute of Chemistry, Slovak Academy of Sciences.