News|Articles|February 19, 2024

Cannabinoid Isomer Separation Utilizing an Analytical Quality by Design (AQbD)

Cannabinoid separation can be difficult with the presence of coeluting isomers. This application shows how a combination of LabSolutions MD (Method Development) software and powerful i-PDeA technology can help determine the optimal method for cannabinoid separation and deconvolute remaining co-eluting peaks after optimization.


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Figure 2. Split injection used to measure triplicate test of MTBE, hexane, o-xylene, and 1-methylnaphthalene comparing different solvents (methanol, methylene chloride) and column insertion distances starting with 0.5 mm, 5.0 mm, 10.0 mm, 15 mm, and 20.0 mm. Methanol had the best performance at the 5.0 mm insertion distance and methylene chloride looked slightly better at the 0.5 mm. We would still recommend not going below the 5.0 mm manufacturer recommended insertion distance.
Revisiting insertion distance for methanol and methylene chloride in GC analysis and confirming that insertion depth strongly affects response and reproducibility.
Basel, Switzerland. Old town with red stone Munster cathedral on the Rhine river. © SCStock - stock.adobe.com
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