The examination of illicit XXXX .

@entity1040 @entity6188 @entity1626 @entity2072 @entity1391
A laboratory system of examination of illicit @entity2072 exhibits is described. Separation and identification of many of the components in exhibits are achieved by the use of capillary column gas chromatography and a Finnigan ion trap detector. Further examination and quantitation of the components of exhibits is achieved using two high performance liquid chromatographic (HPLC) systems. Both of these systems use identical reverse phase C8 columns. System 1 employs a solvent composed of 40% @entity1626 , 10% @entity6188 and 50% 0.1% v/v aqueous @entity1040 . The eluant is monitored at 280 nm. This system is preferred for routine quantitative analysis of @entity2072 and related alkaloids in exhibits. System 2 employs a solvent composed of 30% @entity1626 and 70% 0.05M @entity1391 buffer (pH = 5.0). The eluant from this system is monitored at both 220 and 280 nm. This system offers advantages in sensitivity. The relative retention times of a number of relevant substances as determined with gas chromatography and the two HPLC systems are given. The utility of the methodology for the identification and comparison of exhibits is demonstrated.
