Quality Control of 11 Cannabinoids by Ultraperformance Liquid Chromatography Coupled with Mass Spectrometry (UPLC-MS/MS)

Figure 2

The chromatograms of water that was spiked with cannabinoids at concentration corresponding to the limit of quantification (LOQ). The cannabinoids were observed in the positive MS mode (a) and in the negative MS mode (b). The chemical structures and molecular weights of the cannabinoids that were determined via UPLC-MS/MS are also shown.

(a)

(b)