Determination of glyphosate, AMPA and glufosinate in dairy farm water from Argentina using a simplified UHPLC-MS/MS method

The Science of the Total Environment
Luisina Delma DemonteMaria Rosa Repetti

Abstract

Argentina, together with the USA and Brazil, produces approximately 80% of the total worldwide glyphosate loadings. The development of a simplified ultra-high performance liquid chromatographic tandem mass spectrometric method (UHPLC-MS/MS) for the determination of glyphosate, aminomethylphosphonic acid (AMPA) and glufosinate in water is described, including studies of several alternatives of 9-fluorenylmethylchloroformate (FMOC-Cl) derivatization and pretreatment steps. The proposed method includes acidification and neutralization of a low sample volume (3 mL), 2 hours derivatization step, cleanup with dichloromethane, followed by reverse phase UHPLC-MS/MS determination of the analytes. Figures of merit were satisfactory in terms of linearity, selectivity, accuracy and intermediate precision (%REC 70-105% with RSD < 15%). Limits of quantification (LOQ) were suitable for monitoring purposes (0.6, 0.2, 0.1 μg/L for glyphosate, AMPA and glufosinate respectively). The validated methodology was applied for the analysis of livestock wells waters from 40 dairy farms located in the central region of Argentina. Glyphosate and AMPA were quantified in 15% and 53% of the analyzed samples with concentrations ranging from 0.6-11.3 μg/L and ...Continue Reading

References

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Citations

Nov 27, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jun LiangFang Han
Jul 6, 2020·Environmental Science and Pollution Research International·Aline PompermaierLeonardo José Gil Barcellos
Jun 17, 2020·Bulletin of Environmental Contamination and Toxicology·Devender Kumar SharmaPushap Raj
Nov 3, 2020·Chemosphere·Juan P MuñozGloria M Calaf
May 12, 2021·Scientific Reports·Karlo Alves da SilvaCíntia Mara Ribas de Oliveira
Jul 27, 2021·Frontiers in Endocrinology·María Mercedes MilesiJorgelina Varayoud
Jul 9, 2020·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Virginia LorenzMaría M Milesi

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