GC-MS identification of multicomponent organic compounds mixtures using extra column phase equilibrium

The necessity for applying additional information to increase the reliabili ty of organic components identification in their complex mixtures by the GC -MS technique has been demonstrated taking as an example of essential oil o f birch buds. It was shown that increase in reliability can be attained by using additional identification parameters: retention indices (RI) and part ition coefficients (K-p) Of mixture components in a system of immiscible so lvents. A parameter j is introduced for identification convenience. It is a function of both RI and K-p. Average K-p and j values are reported for mai n groups of components in essential oil of plants: terpene hydrocarbons and their oxygen-containing derivatives.