title: Determination of morphine in raw opium, opium tincture and other opiate preparations by gas-liquid chromatography.
mesh_terms: D002849:Chromatography, Gas; D002853:Chromatography, Liquid; D003061:Codeine / Q000032:analysis; D008722:Methods; D009020:Morphine / Q000032:analysis*; D009892:Opium / Q000032:analysis*
chemical_list: D009020:Morphine; D009892:Opium; D003061:Codeine