Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samples

Detalhes bibliográficos
Autor(a) principal: Martins, Fernanda Cristina de Oliveira Lopes
Data de Publicação: 2019
Tipo de documento: Trabalho de conclusão de curso
Idioma: eng
Título da fonte: Repositório Institucional da UFU
Texto Completo: https://repositorio.ufu.br/handle/123456789/26799
Resumo: FAPEMIG - Fundação de Amparo a Pesquisa do Estado de Minas Gerais
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spelling Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samplesTriazine-based pesticidesDental amalgam electrodeAmetrynSimazineAtrazineSquare wave voltammetryCNPQ::CIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOS::CIENCIA DE ALIMENTOSCNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA ANALITICAFAPEMIG - Fundação de Amparo a Pesquisa do Estado de Minas GeraisTrabalho de Conclusão de Curso (Graduação)This paper describes the use of a dental amalgam electrode (DAE) allied to square wave voltammetry (SWV) in the analytical determination of the triazine-based pesticides ametryn (AM), atrazine (AT) and simazine (SI) in natural waters. Experimental and voltammetric parameters were optimized as Brinton-Robinson buffer at pH 2.5, with pulse frequency of 100 s-1, pulse amplitude of 50 mV and scan increment of -2 mV, where the triazines presented well-defined irreversible voltammetric peaks, at -1.05 V, -0.97 V and -0.99 V for AM, AT and SI respectively. For AM and SI was observed a redox reaction controlled by diffusion rate and for AT a reaction controlled by adsorption kinetic. Besides, in AM occurred the reduction of bond carbon-SCH3 and in AT and SI the reduction of bond carbon-chloride. Analytical curves were constructed, and the voltammetric signals were directly proportional to concentration, and to all triazines, the detection limits were lower than the maximum of residues permitted in natural water by Brazilian Environmental Agency, 100 g L-1 (100 ppb) and around the obtained using traditional techniques and other electrodic surfaces. The recovery percentages, in pure electrolyte and natural waters, were around 100%, demonstrating that the methodology proposed is suitable for determining any contamination by AM, AT and SI natural waters samples.Universidade Federal de UberlândiaBrasilEngenharia de AlimentosSouza, Djenaine dehttp://lattes.cnpq.br/2330157389721384Silva, Lucas MoreiraMuñoz, Rodrigo Alejandro Abarzahttp://lattes.cnpq.br/0884149595277368Martins, Fernanda Cristina de Oliveira Lopes2019-08-26T18:24:47Z2019-08-26T18:24:47Z2019-07-08info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/bachelorThesisapplication/pdfMARTINS, Fernanda Cristina de Oliveira Lopes. Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samples. 2019. 39 f. Trabalho de Conclusão de Curso (Graduação em Engenharia de Alimentos) - Universidade Federal de Uberlândia, Uberlândia, 2019.https://repositorio.ufu.br/handle/123456789/26799enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFUinstname:Universidade Federal de Uberlândia (UFU)instacron:UFU2019-08-27T06:07:01Zoai:repositorio.ufu.br:123456789/26799Repositório InstitucionalONGhttp://repositorio.ufu.br/oai/requestdiinf@dirbi.ufu.bropendoar:2019-08-27T06:07:01Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU)false
dc.title.none.fl_str_mv Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samples
title Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samples
spellingShingle Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samples
Martins, Fernanda Cristina de Oliveira Lopes
Triazine-based pesticides
Dental amalgam electrode
Ametryn
Simazine
Atrazine
Square wave voltammetry
CNPQ::CIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOS::CIENCIA DE ALIMENTOS
CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA ANALITICA
title_short Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samples
title_full Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samples
title_fullStr Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samples
title_full_unstemmed Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samples
title_sort Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samples
author Martins, Fernanda Cristina de Oliveira Lopes
author_facet Martins, Fernanda Cristina de Oliveira Lopes
author_role author
dc.contributor.none.fl_str_mv Souza, Djenaine de
http://lattes.cnpq.br/2330157389721384
Silva, Lucas Moreira
Muñoz, Rodrigo Alejandro Abarza
http://lattes.cnpq.br/0884149595277368
dc.contributor.author.fl_str_mv Martins, Fernanda Cristina de Oliveira Lopes
dc.subject.por.fl_str_mv Triazine-based pesticides
Dental amalgam electrode
Ametryn
Simazine
Atrazine
Square wave voltammetry
CNPQ::CIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOS::CIENCIA DE ALIMENTOS
CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA ANALITICA
topic Triazine-based pesticides
Dental amalgam electrode
Ametryn
Simazine
Atrazine
Square wave voltammetry
CNPQ::CIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOS::CIENCIA DE ALIMENTOS
CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA::QUIMICA ANALITICA
description FAPEMIG - Fundação de Amparo a Pesquisa do Estado de Minas Gerais
publishDate 2019
dc.date.none.fl_str_mv 2019-08-26T18:24:47Z
2019-08-26T18:24:47Z
2019-07-08
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/bachelorThesis
format bachelorThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv MARTINS, Fernanda Cristina de Oliveira Lopes. Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samples. 2019. 39 f. Trabalho de Conclusão de Curso (Graduação em Engenharia de Alimentos) - Universidade Federal de Uberlândia, Uberlândia, 2019.
https://repositorio.ufu.br/handle/123456789/26799
identifier_str_mv MARTINS, Fernanda Cristina de Oliveira Lopes. Dental amalgam electrode as voltammetric sensor to triazine-based pesticides determination: application in natural water samples. 2019. 39 f. Trabalho de Conclusão de Curso (Graduação em Engenharia de Alimentos) - Universidade Federal de Uberlândia, Uberlândia, 2019.
url https://repositorio.ufu.br/handle/123456789/26799
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Uberlândia
Brasil
Engenharia de Alimentos
publisher.none.fl_str_mv Universidade Federal de Uberlândia
Brasil
Engenharia de Alimentos
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFU
instname:Universidade Federal de Uberlândia (UFU)
instacron:UFU
instname_str Universidade Federal de Uberlândia (UFU)
instacron_str UFU
institution UFU
reponame_str Repositório Institucional da UFU
collection Repositório Institucional da UFU
repository.name.fl_str_mv Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU)
repository.mail.fl_str_mv diinf@dirbi.ufu.br
_version_ 1805569651585843200

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