Alkylsilyl speciation and direct sample preparation of plant cannabinoids prior to their analysis by GC-MS

Green sample preparation without extraction; 0.50-0.55 mg dried, pulverized Cannabis tissue derivatized with PYR/HMDS/TFA 1/2/0.25 (v/v) in total 375 μL: 1 μL injected and evalutaed on the basis of selective fragment ions.243