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Mar 05, 2021 · A total of 611 (GC–TOF/MS), 1950 (LC–MS POS), and 2,807 (LC–MS NEG) valid peaks were obtained. Gross variations in metabolic physiology were simply identified via the unsupervised PCA of the total measured analytes. The PCA and metabolic profiles of GC–MS and LC–MS are shown in Figures 1A–C. The values for R2X in the PCA among EG1

LC/MS/MS Method. The HPLC column used for this analysis was the polymer-based apHera™ NH 2 column, which provides stable and robust LC separations from pH 2 to 13. The mobile phase gradient used water and ammonium carbonate at pH 9.

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May 02, 2018 · This has given rise to numerous liquid chromatography-based methods to evaluate both acidic and non-acidic forms. LC-MS/MS test development has been prolific in THC forensic analysis of hair, blood, urine, and sweat [23–26]. In contrast, the application of LC-MS/MS method to the complex and diverse matrices often encountered in the food and

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Feb 09, 2021 · An aliquot of shoot (leaf and stem) tissues was collected in plastic vials, snap-frozen on dry ice and stored for LC-MS analysis (referred to as study sample ). The remaining biomass, including the