title: Packed column chromatography, high-resolution gas-chromatography and high pressure liquid chromatography in comparison for the analysis of cannabis constituents.
abstract: The identification and the quantitative estimation of cannabis constituents is important for forensic purposes. High resolution gas-chromatography gives better results than gas-liquid chromatography with packed columns, as it shows a better resolution and higher number of constituents. Different quantitative values were found with the two chromatographic procedures. High-pressure liquid chromatography revealed the presence of cannabinoid acids in fresh cut influorescences of cannabis plants. The ratio acid/neutral cannabinoid may be useful in supplying information about the age of the cannabis preparations.
mesh_terms: D002185:Cannabidiol / Q000032:analysis; D002186:Cannabinoids / Q000032:analysis*; D002187:Cannabinol / Q000032:analysis; D002188:Cannabis / Q000032:analysis*; D002845:Chromatography / Q000379:methods*; D002849:Chromatography, Gas / Q000379:methods; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D013759:Dronabinol / Q000032:analysis
chemical_list: D002186:Cannabinoids; D002185:Cannabidiol; D013759:Dronabinol; D002187:Cannabinol; C010695:cannabichromene