title: Negative-ion mass spectrometry of amphetamine congeners.
abstract: Negative-ion chemical ionization mass spectrometry with a conventional combined gas chromatograph-mass spectrometer has been used for the analysis of amphetamine-like compounds. Ammonia was used as the reagent gas, which gives rise to few but specific sample-fragment ions, such as (M--1)- as the base peak, m/z 91, and a smaller peak corresponding to the end part of the side chain. Five reference compounds and a urine sample from an overdose case were analyzed. Comparative positive-ion chemical ionization reference spectra were also recorded.
mesh_terms: D000662:Amphetamines / Q000032:analysis* / Q000652:urine; D000838:Anions; D004809:Ephedrine / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D008694:Methamphetamine / Q000032:analysis; D010633:Phenmetrazine / Q000032:analysis; D010645:Phentermine / Q000032:analysis; D010665:Phenylpropanolamine / Q000032:analysis
chemical_list: D000662:Amphetamines; D000838:Anions; D010665:Phenylpropanolamine; D008694:Methamphetamine; D010645:Phentermine; D004809:Ephedrine; D010633:Phenmetrazine