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Figure 3 – Stability of peak areas for the quantitation transition for 12 compounds in a 20-ppb QC check standard over a three-month period.


are still in widespread use. These data also stress the need for states to develop effective testing procedures for the cannabis industry.


Figure 2 – Data from a flower extract spiked with myclobutanil at 0.45 ppb (0.01 ppm in plant) showing excellent linearity and precision at low concentrations in a complex matrix.


and reflects the effectiveness of this compound to protect crops from spoilage. What is perhaps more interesting is the large number of compounds that were actually detected in these samples. Clearly, this indicates that many compounds that are not allowed for use on cannabis


Conclusion


The data presented in this article demonstrate that an LC-MS/MS method can be used for the analysis of all 59 compounds from the Oregon pesticide list. LC-MS/MS provided excellent selectivity, sensitivity, and robustness over several months. The data from over 5000 sample analyses show that many of these compounds are found in a variety of cannabis samples and support the need for thorough and accurate testing.


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