Reduced parameters Knox equation

The reduced velocity compares the mobile phase velocity with the velocity of the solute diffusion through the pores of the particle. In fact, the mobile phase velocity is measured in units of the intraparticle diffusion velocity. As the reduced velocity is a ratio of velocities then, like the reduced plate height, it also is dimensionless. Employing the reduced parameters, the equation of Knox takes the following form... [Pg.264]

Employing the reduced parameters the equation of Knox takes the following form,... [Pg.126]

A more vigorous treatment similar to the van Deemter equation but developed specifically for HPLC is the Knox equation, which uses a number of reduced parameters where h is the reduced plate height (h/dp) and vis reduced velocity (V dJD. ... [Pg.34]

Figure 5.4 shows plots of the reduced rate equation (on a log-log basis) taken from Knox and Saleem.4 GC is compared with LC for two stationary phases and several nonretained analytes. While all the points do not fall on one smooth curve, the plot clearly shows the similarities between GC and LC plots when reduced parameters are used. [Pg.190]

Big Chemical Encyclopedia