The Ion Chemistry Underlying Detection of Drugs

FIGURE 14.1 Molecular structure of some of the common illicit drugs (top left to right bottom) cocaine, heroin hydrochloride, amphetamine, benzodiazepine derivative, sodium barbiturate, and psilocin. Note that all these are nitrogen bases. 

FIGURE 14.2 The mobility spectra of several illicit drugs. (From Kanu, A.B. Wu, C. Hill, H.H., Rapid preseparation of interferences for ion mobility spectrometry, Anal. Chim. Acta 2008, 610, 125-134. With permission.) 

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