Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/7834
Title: Glyphosate determination in soil, water and vegetables using DPV optimized by response surface methodology.
Authors: Teófilo, Reinaldo Francisco
Reis, Efraim Lázaro
Reis, Cesar
Silva, Gilmare Antônia da
Paiva, José Fernando de
Kubota, Lauro Tatsuo
Keywords: Glyphosate
Voltammetry
Experimental design
Issue Date: 2008
Citation: TEÓFILO, R. F. et al. Glyphosate determination in soil, water and vegetables using DPV optimized by response surface methodology. Portugaliae Electrochimica Acta, v. 26, p. 325-337, 2008. Disponível em: <http://www.scielo.mec.pt/pdf/pea/v26n4/v26n4a02.pdf>. Acesso em: 20 abr. 2017.
Abstract: A voltammetric procedure optimized by experimental design for glyphosate determination in soil, water and vegetable samples is described. The voltammetry experiments were performed using a hanging mercury drop electrode (HMDE). The DPV variables involved in the optimization process were: voltage step, pulse amplitude, pulse interval, voltage step time and concentration of the supporting electrolyte. A full 25 factorial design was chosen to evaluate these effects. From the results obtained by the factorial design the three most important factors were determined. These variables were evaluated with a central composite design. Under the optimized conditions, the operational range was from 0.050 to 100.0 mg dm-3 and the detection and quantification limits were 14 and 48 μg dm-3, respectively. The optimized method was successfully applied to glyphosate determination in soil, water and vegetables after purifying with an ion exchange resin and derivation.
URI: http://www.repositorio.ufop.br/handle/123456789/7834
ISSN: 0872-1904
metadata.dc.rights.license: Todo o conteúdo do periódico Portugaliae Electrochimica Acta, exceto onde identificado, está sob uma licença Creative Commons que permite copiar, distribuir e transmitir o trabalho desde que sejam citados o autor e o licenciante. Não permite o uso para fins comerciais. Fonte: Portugaliae Electrochimica Acta <http://www.scielo.mec.pt/scielo.php?script=sci_serial&pid=0872-1904&lng=en>. Acesso em: 21 nov. 2019.
Appears in Collections:DEQUI - Artigos publicados em periódicos

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