Analysis of Aqueous Mobile Phase Sample Preparation and Filtration Steps in Cannabis Analytical Testing

Analysis of Aqueous Mobile Phase Sample Preparation and Filtration Steps in Cannabis Analytical Testing

Poster

The two-fold objective of this study was to 1) demonstrate that aqueous mobile phase preparations from purchased lab grade bottled water yielded comparable results to in-house prepared water (Sartorius Arium purified water Type 1 and Type 3) and that 2) using filters (Sartorius Minisart RC, SRP, NY & NY Plus, all 0.2 µm) yielded comparable results to unfiltered specimens under the same mobile phase conditions.  

A blank matrix specimen (homogenized nettle leaf (Urtica dioica)) was spiked for calibrators and controls and analyzed without cannabinoid spikes (blanks, n=5) using designated mobile phases for each water type to assess any specimen affects from the water.  In addition, a true cannabis specimen was filtered using each of the four different filter types (Sartorius Minisart RC, SRP, NY & NY Plus, all 0.2 µm) and analyzed (n=5) using the corresponding calibration curves and controls.  

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