Fast gas chromatography

The review deals with theoretical derivation, based on conventional equatio ns and reduced parameters, of relationships describing the analysis time an d the related pressure drop. On the basis of derived equations, methods of minimizing the GC analysis time are discussed. Reduction of the column inne r diameter and using hydrogen as carrier gas is the best approach to increa sing the separation speed in GC. The vacuum outlet operation of capillary c olumns allows in some situations a further shortening of the analysis time. The effect of reduction of the column inner diameter on chromatographic zo ne broadening, detection limits and sample capacity is also discussed.