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  • Title: A preliminary study of the analysis of Cannabis by supercritical fluid chromatography with atmospheric pressure chemical ionisation mass spectroscopic detection.
    Author: Bäckström B, Cole MD, Carrott MJ, Jones DC, Davidson G, Coleman K.
    Journal: Sci Justice; 1997; 37(2):91-7. PubMed ID: 9206314.
    Abstract:
    A rapid method is described for the analysis of Cannabis products by supercritical fluid chromatography (SFC) coupled to atmospheric pressure chemical ionization-mass spectroscopic (APCI-MS) detection. The method had a shorter analysis time than GC-MS methods, without the need for derivatization prior to analysis. It was also faster than HPLC methods, with better resolution and definitive identification. Linearity of detector response to cannabidiol, delta 8-tetrahydrocannabinol, delta 9-tetrahydrocannabinol and cannabinol was established, the detection limits for mass on column being 0.55 ng, 1.20 ng, 0.69 ng and 2.10 ng respectively. The technique offers a means by which Cannabis products can be definitively identified in a single chromatographic run. Application to casework samples is described.
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