Analysis of Pesticide Residues and Mycotoxins in Cannabis using QuEChERS Extraction, ChloroFiltr® dSPE Cleanup and LC-MS/MS Detection

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With the recent trends in legalization, interest in cannabis and cannabis-based products (e.g. concentrated oils, soda, candy and other edible forms) have dramatically increased. Like any other crop, pesticides are commonly used in cannabis cultivation to protect plants from pests and improve growth yields. However, pesticide residues can pose significant health risks, especially with chronic exposure.

This application note outlines a QuEChERS method for the simultaneous analysis of 47 pesticides and 5 mycotoxins in cannabis, including most of the LC-MS/MS amenable compounds on the Massachusetts and Nevada monitoring lists. Sample purification is carried out using UCT’s new cleanup product SpinFiltr™, which combines the convenience of classical dispersive-SPE (dSPE) with an ultrafiltration tube containing a 0.2 μm filter membrane to simultaneously remove unwanted matrix components and filter the sample prior to LC (or GC) analysis.

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