ABSTRACT

Let us consider the dependence of Rs on the nature and pressure of the carrier gas assuming that the dependence of E and C on the average column pressure can be neglected and that atj depends on the carrier gas pressure:

(54) Using Eq. (31) in Eq. (54) gives

(55) where

(56) It follows from Eq. (55) that the peak resolution Rs depends on the nature and pressure of the carrier gas. Thus, varying column pressure and changing carrier gas can influence the separation, and a different mobile phase in GC can improve the separation selectivity and increase the Rs value. Equations (55) and (56) for the peak resolution were derived in Ref. 104.