Abstract
As a result of frequent phencyclidine (PCP) abuse, pyrolysis studies were conducted to further investigate its fate during smoking. Marijuana placebo cigarettes were impregnated with 3H-PCP X HCI and burned under conditions simulating smoking. Mainstream smoke was passed through glass wool filters as well as acidic and basic traps. Approximately 90% of the starting material could be accounted for in the first glass wool trap and cigarette holder. HPLC and GC/MS analysis of methanol extracts of these glass wool traps revealed the presence of 1-phenyl-1-cyclohexene (47% of the starting material) greater than PCP (40%) greater than piperidine (15%) greater than N-acetylpiperidine (9%). It was not possible to fully account for the remainder of the piperidine moiety. It has been reported that at high temperatures PCP is converted to numerous polynuclear aromatic compounds which include styrene, alpha-methylstyrene, naphthalene, 2-methylnaphthalene, 1-methylnaphthalene, biphenyl, cyclohexylbenzene, acenaphthene, phenanthrene, and anthracene. These compounds were not formed from PCP under smoking conditions.
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