Determination of Glyphosate in Water Samples by Multi-pumping Flow System Coupled to a Liquid Waveguide Capillary Cell
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.2116/analsci.27.1031 http://hdl.handle.net/11449/26113 |
Resumo: | A simple screening method was developed for the determination of glyphosate in water samples using a multi-pumping flow system. The proposed method is based on the reaction between glyphosate and p-dimethylaminocinnamaldehyde (p-DAC), in an acid medium where the reaction product can be measured spectrophotometrically at lambda(max) = 495 nm. An experimental design methodology was used to optimize the measurement conditions. The proposed method was applied to the determination of glyphosate in water samples in a concentration range from 0.5 to 10 mu g mL(-1). The limit of detection and quantification were 0.17 and 0.53 mu g mL(-1), respectively. The results obtained (88.5 to 104.5%) in recovery studies for the determination of glyphosate in different water samples indicated good accuracy and no matrix effect for the developed method. Samples were also analyzed by a confirmatory HPLC method, and agreement within the two set of results was found. |
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Repositório Institucional da UNESP |
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2946 |
spelling |
Determination of Glyphosate in Water Samples by Multi-pumping Flow System Coupled to a Liquid Waveguide Capillary CellA simple screening method was developed for the determination of glyphosate in water samples using a multi-pumping flow system. The proposed method is based on the reaction between glyphosate and p-dimethylaminocinnamaldehyde (p-DAC), in an acid medium where the reaction product can be measured spectrophotometrically at lambda(max) = 495 nm. An experimental design methodology was used to optimize the measurement conditions. The proposed method was applied to the determination of glyphosate in water samples in a concentration range from 0.5 to 10 mu g mL(-1). The limit of detection and quantification were 0.17 and 0.53 mu g mL(-1), respectively. The results obtained (88.5 to 104.5%) in recovery studies for the determination of glyphosate in different water samples indicated good accuracy and no matrix effect for the developed method. Samples were also analyzed by a confirmatory HPLC method, and agreement within the two set of results was found.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)FSEMCTES (Ministerio da Ciencia, Tecnologia e Ensino Superior)Univ Porto, Fac Farm, Dept Quim, REQUIMTE, P-4099030 Oporto, PortugalUniv Estadual Paulista UNESP, Inst Quim, BR-14801970 Araraquara, SP, BrazilUniv Estadual Paulista UNESP, Inst Quim, BR-14801970 Araraquara, SP, BrazilJapan Soc Analytical ChemistryUniversidade do PortoUniversidade Estadual Paulista (Unesp)Silva, Aline S. [UNESP]Toth, Ildiko V.Pezza, Leonardo [UNESP]Pezza, Helena Redigolo [UNESP]Lima, Jose L. F. C.2014-05-20T14:20:20Z2014-05-20T14:20:20Z2011-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1031-1036http://dx.doi.org/10.2116/analsci.27.1031Analytical Sciences. Tokyo: Japan Soc Analytical Chemistry, v. 27, n. 10, p. 1031-1036, 2011.0910-6340http://hdl.handle.net/11449/2611310.2116/analsci.27.1031WOS:000296315900010597890859185352431921250983611210000-0003-0197-7369Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnalytical Sciences1.3550,424info:eu-repo/semantics/openAccess2021-10-23T11:16:28Zoai:repositorio.unesp.br:11449/26113Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:13:36.977235Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Determination of Glyphosate in Water Samples by Multi-pumping Flow System Coupled to a Liquid Waveguide Capillary Cell |
title |
Determination of Glyphosate in Water Samples by Multi-pumping Flow System Coupled to a Liquid Waveguide Capillary Cell |
spellingShingle |
Determination of Glyphosate in Water Samples by Multi-pumping Flow System Coupled to a Liquid Waveguide Capillary Cell Silva, Aline S. [UNESP] |
title_short |
Determination of Glyphosate in Water Samples by Multi-pumping Flow System Coupled to a Liquid Waveguide Capillary Cell |
title_full |
Determination of Glyphosate in Water Samples by Multi-pumping Flow System Coupled to a Liquid Waveguide Capillary Cell |
title_fullStr |
Determination of Glyphosate in Water Samples by Multi-pumping Flow System Coupled to a Liquid Waveguide Capillary Cell |
title_full_unstemmed |
Determination of Glyphosate in Water Samples by Multi-pumping Flow System Coupled to a Liquid Waveguide Capillary Cell |
title_sort |
Determination of Glyphosate in Water Samples by Multi-pumping Flow System Coupled to a Liquid Waveguide Capillary Cell |
author |
Silva, Aline S. [UNESP] |
author_facet |
Silva, Aline S. [UNESP] Toth, Ildiko V. Pezza, Leonardo [UNESP] Pezza, Helena Redigolo [UNESP] Lima, Jose L. F. C. |
author_role |
author |
author2 |
Toth, Ildiko V. Pezza, Leonardo [UNESP] Pezza, Helena Redigolo [UNESP] Lima, Jose L. F. C. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Porto Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Silva, Aline S. [UNESP] Toth, Ildiko V. Pezza, Leonardo [UNESP] Pezza, Helena Redigolo [UNESP] Lima, Jose L. F. C. |
description |
A simple screening method was developed for the determination of glyphosate in water samples using a multi-pumping flow system. The proposed method is based on the reaction between glyphosate and p-dimethylaminocinnamaldehyde (p-DAC), in an acid medium where the reaction product can be measured spectrophotometrically at lambda(max) = 495 nm. An experimental design methodology was used to optimize the measurement conditions. The proposed method was applied to the determination of glyphosate in water samples in a concentration range from 0.5 to 10 mu g mL(-1). The limit of detection and quantification were 0.17 and 0.53 mu g mL(-1), respectively. The results obtained (88.5 to 104.5%) in recovery studies for the determination of glyphosate in different water samples indicated good accuracy and no matrix effect for the developed method. Samples were also analyzed by a confirmatory HPLC method, and agreement within the two set of results was found. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-10-01 2014-05-20T14:20:20Z 2014-05-20T14:20:20Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.2116/analsci.27.1031 Analytical Sciences. Tokyo: Japan Soc Analytical Chemistry, v. 27, n. 10, p. 1031-1036, 2011. 0910-6340 http://hdl.handle.net/11449/26113 10.2116/analsci.27.1031 WOS:000296315900010 5978908591853524 3192125098361121 0000-0003-0197-7369 |
url |
http://dx.doi.org/10.2116/analsci.27.1031 http://hdl.handle.net/11449/26113 |
identifier_str_mv |
Analytical Sciences. Tokyo: Japan Soc Analytical Chemistry, v. 27, n. 10, p. 1031-1036, 2011. 0910-6340 10.2116/analsci.27.1031 WOS:000296315900010 5978908591853524 3192125098361121 0000-0003-0197-7369 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Analytical Sciences 1.355 0,424 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1031-1036 |
dc.publisher.none.fl_str_mv |
Japan Soc Analytical Chemistry |
publisher.none.fl_str_mv |
Japan Soc Analytical Chemistry |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129175880466432 |