Rapid and direct determination of glyphosate and aminomethylphosphonic acid in water using anion-exchange chromatography with coulometric detection
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2008
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Resumo |
A simple, rapid, and low-cost coulometric method for direct detection of glyphosate and aminomethylphosphonic acid (AMPA) in water samples using anion-exchange chromatography and coulometric detection with copper electrode is presented. Under optimized conditions, the limits of detection (LODs) (S/N = 3) were 0.038 mu g ml(-1) for glyphosate and 0.24 mu g ml(-1) for AMPA, without any preconcentration method. The calibration curves were linear and presented an excellent correlation coefficient. The method was successfully applied to the determination of glyphosate and AMPA in water samples without any kind of extraction, clean-up, or preconcentration step. No interferent was found in the water, like this, the recovery was, practically, 100%. (c) 2008 Elsevier B.V. All rights reserved. CAPES Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) CNPq Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) FAPESP[04/09384-7] Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) |
Identificador |
JOURNAL OF CHROMATOGRAPHY A, v.1208, n.1/Fev, p.246-249, 2008 0021-9673 http://producao.usp.br/handle/BDPI/31593 10.1016/j.chroma.2008.09.009 |
Idioma(s) |
eng |
Publicador |
ELSEVIER SCIENCE BV |
Relação |
Journal of Chromatography A |
Direitos |
restrictedAccess Copyright ELSEVIER SCIENCE BV |
Palavras-Chave | #Anion-exchange chromatography #Coulometric detection #Glyphosate #AMPA #Copper electrode #Direct analysis #PERFORMANCE LIQUID-CHROMATOGRAPHY #AMPEROMETRIC DETECTION #CAPILLARY-ELECTROPHORESIS #COPPER MICROELECTRODE #AMINO-ACIDS #DERIVATIZATION #GLUFOSINATE #DISSOLUTION #ELECTRODES #METABOLITE #Biochemical Research Methods #Chemistry, Analytical |
Tipo |
article original article publishedVersion |