title: Identification and chemical classification of drugs based on the relative response of a nitrogen selective detector and a flame lonization detector in gas chromatographic analysis.
mesh_terms: D002110:Caffeine / Q000032:analysis; D002849:Chromatography, Gas / Q000379:methods*; D004566:Electrodes; D006358:Hot Temperature; D009584:Nitrogen / Q000032:analysis; D011619:Psychotropic Drugs / Q000145:classification*
chemical_list: D011619:Psychotropic Drugs; D002110:Caffeine; D009584:Nitrogen