The appearance of new drugs within the crime laboratory necessitates the development and improvement of analytical schemes for their detection. One class of particular interest is the phencyclidine-related drugs. The drugs studied are 1-(1-phenylcyclohexyl) piperidine (PCP), commonly known as phencyclidine, “Angel's Dust,” or DOA [1]; the two homologs 1-(1-phenylcyclohexyl) pyrrolidine (PHP) and 1-(1-phenylcyclopentyl) piperidine (PPP); and an analog 1-(2[thienyl]cyclohexyl) piperidine (TCP).