Plate height equations

Abstract The efficiency of a column is affected by a number of variables:

Column length
Column diameter (open-tubular columns)
Particle size (packed columns)
Packing and coating quality
Linear velocity (flow)
Instrument quality (dead, void or hold-up volume)
Retention factor k

Various equations have been developed to describe the influence of these variables on the column efficiency:

1. The Van Deemter equation for packed GC columns
2. The Golay equation for capillary columns


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