One-step purification/extraction method to access glyphosate, glufosinate, and their metabolites in natural waters - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Journal of Chromatography A Année : 2021

One-step purification/extraction method to access glyphosate, glufosinate, and their metabolites in natural waters

Résumé

A new green method for trace level quantification of four herbicides, glyphosate (GLYP), glufosinate (GLUF), and their main metabolites, aminomethylphosphonic acid (AMPA) and 3-(methyl-phosphinico)-propionic acid (MPPA), was developed. The purification step without any derivatization was conducted by solid-phase extraction using Chelex-100 resin in the Fe (III) form, followed by elution with 5% NH 4 OH. The four analytes were quantified by ultra-high-performance liquid chromatography coupled to tandem mass spectrometry. The developed extraction method was validated on five fresh and sea water matrices with mean recoveries ranging from 80.1% to 109.4% (relative standard deviation < 20%). The extraction conditions were evaluated and certified for the high applicability of the extraction method too. The limits of detection (ng/L) in the five water matrices were in ranges 0.70-4.0, 2.4-3.9, 1.8-4.7, and 1.6-4.0 for GLYP, AMPA, GLUF, and MPPA, respectively. The method was successfully applied to detect the four compounds in surface waters sampled along the Red River Delta region in July 2019. The highest concentrations were detected at 565, 1,330, 234, and 871 ng/L for GLYP, AMPA, GLUF, and MPPA, respectively. These results showed the potential capacity of this new method for convenient monitoring of herbicides and their metabolites in the diverse natural water system.
Fichier principal
Vignette du fichier
HAL_manuscript Vu et al.pdf (605.83 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03408858 , version 1 (29-10-2021)

Identifiants

Citer

Cam Tu Vu, Phuong Thu Le, Dinh Binh Chu, van Hoi Bui, Thi Lan Anh Phung, et al.. One-step purification/extraction method to access glyphosate, glufosinate, and their metabolites in natural waters. Journal of Chromatography A, 2021, 1649, pp.462188. ⟨10.1016/j.chroma.2021.462188⟩. ⟨hal-03408858⟩
395 Consultations
434 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More