Determination of glyphosate and aminomethylphosphonic acid by capillary electrophoresis with indirect detection using pyridine-2,6-dicarboxylic acid or 3,5-dinitrobenzoic acid

Autor(es)

Moraes, Malu Pelegrinelli ^[1] ; Goncalves, Luis Moreira ^{[2, 3]} ; Pereira, Elisabete Alves ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos UFSCar, Dept Fis Quim & Matemat, Sorocaba, SP - Brazil

^[2] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, Sao Paulo, SP - Brazil

^[3] Univ Porto FCUP, Dept Quim & Bioquim, REQUIMTE LAQV, Fac Ciencias, Porto - Portugal

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY; v. 98, n. 3, p. 258-270, 2018.
• Citações Web of Science: 3

Resumo

Glyphosate (GlyP), a widely used nonselective herbicide, and aminomethylphosphonic acid (AMPA), GlyP's most common product of degradation in the environment, seem not to pose any major health threats. However, due to their persistence and the large quantities applied worldwide, they have become a source of concern. This justifies that their simple and swift determination is of considerable relevance. This work presents two indirect capillary electrophoretic methodologies using as chromophores 3,5-dinitrobenzoic acid (DNB) and pyridine-2,6-dicarboxylic acid (PDC), both associated with hexadecyltrimethylammonium bromide (CTAB). Although both methods showed suitable analytical parameters, DNB evidenced to be slightly superior. The recoveries values were close to 100%, correlation coefficients were above 0.99 and the limits of detection (LODs) values were below 0.5mg L-1 (2.9 mu mol L-1) and 0.4mg L-1 (3.6 mu mol L-1) for GlyP and AMPA, respectively. (AU)

• Processo FAPESP: 11/23286-1 - Estudos analíticos e ambientais sobre a distribuição espacial, sazonal e temporal de aldeídos de baixa massa molar presentes na atmosfera da região de Sorocaba
• Beneficiário: Elisabete Alves Pereira
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 16/06926-0 - Desenvolvimento e aplicação de novos sensores químicos nanoestruturados e aplicação de novos sensores químicos nanoestruturados baseados em polímeros biomiméticos
• Beneficiário: Maria Del Pilar Taboada Sotomayor
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional