Improved Analysis of Glyphosate, Aminomethylphosphonic Acid, and Other Highly Polar Pesticides and Metabolites via the QuPPe Method by Employing Ethylenediaminetetraacetic Acid and IC-MS/MS.

ABSTRACT: The quantification of glyphosate (Gly) and its metabolite aminomethylphosphonic acid (AMPA) in food is often impaired by matrix components. Specifically, interaction between the analytes and natural matrix components in food leads to reduced analyte recovery rates. Here, we studied how the addition of ethylenediaminetetraacetic acid (EDTA) impacted the QuPPe recovery rates of Gly and its metabolite in eight mostly problematic matrices using tandem mass spectrometry. QuPPe recovery rates of glyphosate and AMPA could be increased dramatically, e.g., in milk from 29 to 93% and 18 to 93%, respectively. Additionally, isotopically labeled internal standards (IL-ISs) effectively compensated for the losses, resulting in IL-IS-corrected recoveries of ∼100% in all cases. The recovery-suppressing eff

SUBMITTER: Schafer AK 

PROVIDER: S-EPMC11783593 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature