(Received 3 November 1977; accepted 12 December 1977)
Published Online: July
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Positive identification of most illicit laboratory exhibits routed to the Special Testing and Research Laboratory of the Drug Enforcement Administration (DEA) for the identification of unknown constituents has been rapidly achieved with the aid of a nuclear magnetic resonance (NMR) spectrometer. This technique often provides valuable quantitative data as well. Magnetic resonance spectroscopy of the hydrogen atom provides information on the chemical nature of a single hydrogen atom (or group of atoms) within a molecule, the number of hydrogen atoms in a particular group, and the number and relative position of hydrogen atoms in neighboring groups.
Forensic chemist, Special Testing and Research Laboratory, Drug Enforcement Administration, McLean, Va.
Stock #: JFS10692J