Page 116 - Applied Pharmacognosy
P. 116

Types of Chemical markers

The mobile and stationary
            Phases

       GC

Mobile phase              Stationary phase

     inert carrier gas     a solid (GSC) or a liquid
(nitrogen, helium, argon  coated on a solid support

      or hydrogen).          (GLC) contained in a
                                coiled column.
   111   112   113   114   115   116   117   118   119   120   121