Several different adulterantswere added to cocaine in equal amounts. The on-
column concentrations of all of the compoundswere10ng each. GC/MS run
conditionswereoptimized to give themaximum separation and the shortest
analysis time. (SeeRunConditions #1). Total analysis timewas 6.5minutes. All
compoundswere baseline resolvedwith the exception of caffeine and lidocaine;
Theywere resolved by approximately 25% (seeTIC #1). However, since they
have very different mass spectra, extracted ion analysis could be performed
resulting in positive identification of each compound. Lidocaine has a distinctive
mass fragment of 86m/z and caffeine has a distinctivemass fragment of 194m/z
(seeMS #1&MS #2).
