California and Oregon Residual Pesticide Analysis using APCI with LC-MS/MS

contributed by Shimadzu | 02/12/2020

Summary

California and Oregon both have lists of pesticides in cannabis to be analyzed. These pesticides are typically analyzed using both LCMS and GCMS because certain compounds do not ionize well by ESI-LCMS. This study demonstrates the use of APCI-LCMS and explores the utility of LCMS for the analysis of the complete California and Oregon pesticides lists for cannabis. APCI-LCMS optimization was completed for ten pesticides. The resulting APCI-LCMS MRM method was tested in cannabis flower extract on a Shimadzu LCMS-8060. The LOQ determined for each pesticide was below the regulatory action level (Table1).

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