Validation of a method for analysis of glyphosate and AMPA in drinking water using ion chromatography

Publié-e
2018-09-17
DOI : https://doi.org/10.14295/ras.v32i3.29084

    Auteurs-es

  • Raquel Fiori LACEN/CEVS/SES/RS http://orcid.org/0000-0003-4597-1559
  • Filipe Medeiros Albano Rede metrológica do RS
  • Ismael Storck Passos Metrohm Brasil
  • Tiago Queiroz Marques LACEN/CEVS/SES/RS

Résumé

The analysis of pesticide residues in water is one of the requirements of drinking water legislated and related to human health. The ionic chromatography (IC) analysis is a technical alternative that contributes to the quantification of the glyphosate herbicide and its amino methyl phosphonic acid metabolite (AMPA) in drinking water because it is quick to prepare (filter and inject), high selectivity, good precision and accuracy. This research aims to develop and validate this method for direct analysis of these pesticides, without sample treatment or derivatization step. In the proposed validation, the parameters of selectivity, accuracy and precision, limits of detection and quantification, linearity and estimation of measurement uncertainty were considered. The results indicated that this technique is adequate and presents a good sensitivity for the quantification of these analytes in the water matrix, and the validation results are appropriate against the maximum concentration limits stipulated in Legislation 2914/11 of the Ministry of Health.

Comment citer
Fiori, R., Albano, F. M., Passos, I. S., & Marques, T. Q. (2018). Validation of a method for analysis of glyphosate and AMPA in drinking water using ion chromatography. Águas Subterrâneas, 32(3), 307–314. https://doi.org/10.14295/ras.v32i3.29084