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Voltammetric Quantification of Paraquat and Glyphosate in Surface Waters

Determinación voltamétrica de paraquat y glifosato en aguas superficiales;
Determinação voltamétrica de paraquato e glifosato em águas superficiais

dc.creatorAlza-Camacho, William Roberto
dc.creatorGarcía-Colmenares, José Mauricio
dc.creatorChaparro-Acuña, Sandra Patricia
dc.date2016-08-16
dc.date.accessioned2020-08-04T20:35:50Z
dc.date.available2020-08-04T20:35:50Z
dc.identifierhttp://revista.corpoica.org.co/index.php/revista/article/view/510
dc.identifier10.21930/rcta.vol17_num3_art:510
dc.identifier.urihttp://test.repositoriodigital.com:8080/handle/123456789/4616
dc.descriptionThe indiscriminate use of pesticides on crops has a negative environmental impact that affects organisms, soil and water resources, essential for life. Therefore, it is necessary to evaluate the residual effect of these substances in water sources. A simple, affordable and accessible electrochemical method for Paraquat and Glyphosate quantification in water was developed. The study was conducted using as supporting electrolyte Britton-Robinson buffer solution, working electrode of glassy carbon, Ag/AgCl as the reference electrode, and platinum as auxiliary electrode. Differential pulse voltammetry (VDP) method for both compounds were validated. Linearity of the methods presented a correlation coefficient of 0.9949 and 0.9919 and the limits of detection and quantification were 130 and 190 mg/L for Paraquat and 40 and 50 mg/L for glyphosate. Comparison with the reference method showed that the electrochemical method provides superior results in quantification of analytes. Of the samples tested, a value of Paraquat was between 0,011 to 1,572 mg/L and for glyphosate it was between 0.201 to 2.777 mg/L, indicating that these compounds are present in water sources and that those may be causing serious problems to human health.en-US
dc.descriptionEl uso indiscriminado de plaguicidas en los cultivos genera un impacto ambiental negativo que afecta a los organismos vivos, al suelo y al recurso hídrico. Por lo tanto, es necesario evaluar la residualidad de este tipo de sustancias en fuentes de agua que sirven como abastecimiento para la comunidad, los animales y las labores agrícolas. Con base en esto, se plantea una metodología electroquímica sencilla, económica y asequible para la cuantificación de paraquat y glifosato en las fuentes hídricas aledañas a los cultivos de papa  de tres veredas del municipio de Ventaquemada (Boyacá). El estudio fue realizado usando como electrolito de soporte la solución buffer Britton-Robinson, un electrodo de trabajo de carbón vítreo, Ag/AgCl como electrodo de referencia y platino como electrodo auxiliar. Se validaron los métodos de voltametría de onda cuadrada (VOC) para ambos compuestos, los cuales presentaron un potencial de -650 y -545 mV, respectivamente. La linealidad de los métodos presentó un coeficiente de correlación de 0,9949 y 0,9919. Los límites de detección y cuantificación fueron de 130 y 190 μg/L para paraquat y de 40 y 50 μg/L para glifosato. De las muestras evaluadas se obtuvo un valor de paraquat entre 0,011 y 1,572 mg/L, y de glifosato entre 0,201 y 2,777 mg/L, lo que indica que estos compuestos están presentes en las fuentes hídricas cercanas a los cultivos y que pueden estar causando serios inconvenientes a la salud humana.    es-ES
dc.descriptionO uso indiscriminado de praguicidas nas culturas gera um impacto ambiental negativo que afeta aos organismos vivos, ao solo e ao recurso hídrico. Pelo tanto, é preciso avaliar a residualidade deste tipo de substâncias em fontes de água que são utilizados como fornecimento para a comunidade, os animais e as labores agrícolas. Com base em isto, sugere-se uma metodologia eletroquímica simples, económica e acessível para a quantificação de paraquato e glifosato nas fontes hídricas próximas às culturas de batata de três veredas do municipio de Ventaquemada (Boyacá). O estudo foi realizado usando como eletrólito de suporte a solução buffer Britton-Robinson, o eletrodo de trabalho de carvão vítreo, Ag/AgCl como eletrodo de referência e platino como eletrodo auxiliar. Validaram-se os métodos de voltametria de onda quadrada (VOC) para ambos compostos, os quais apresentaram um potencial de -650 e -545 mV, respectivamente. A linearidade dos métodos apresentou um coeficiente de correlação de 0,9949 e 0,9919. Os limites de detecção e quantificação foram de 130 e 190 μg/L para paraquato e de 40 e 50 μg/L para glifosato. Das amostras avaliadas se obteve um valor de paraquato entre 0,011 e 1,572 mg/L, e de glifosato entre 0,201 e 2,777 mg/L, o que indica que estes compostos estão presentes nas fontes hídricas próximas aos cultivos e que podem estar causando sérios inconvenientes à saúde humana.    pt-BR
dc.formatapplication/pdf
dc.languagespa
dc.publisherCorporación Colombiana de Investigación Agropecuaria (Agrosavia)es-ES
dc.relationhttp://revista.corpoica.org.co/index.php/revista/article/view/510/408
dc.sourceCiencia y Tecnología Agropecuaria; Vol. 17 No. 3 (2016); 331-345en-US
dc.sourceCiencia & Tecnología Agropecuaria; Vol. 17 Núm. 3 (2016); 331-345es-ES
dc.sourcerevista Corpoica Ciência e Tecnologia Agropecuária; v. 17 n. 3 (2016); 331-345pt-BR
dc.source2500-5308
dc.source0122-8706
dc.source10.21930/rcta.vol17-num3
dc.subjectContaminationen-US
dc.subjectChemical weed controlen-US
dc.subjectPotatoesen-US
dc.subjectPesticide residuesen-US
dc.subjectWater resourcesen-US
dc.subjectcontaminaciónes-ES
dc.subjectcontrol químico de malezases-ES
dc.subjectpapaes-ES
dc.subjectresiduos de plaguicidases-ES
dc.subjectrecursos hídricoses-ES
dc.subjectGestión y sostenibilidad ambientales-ES
dc.subjectcontaminaçãopt-BR
dc.subjectcontrole químico de ervas daninhaspt-BR
dc.subjectbatatapt-BR
dc.subjectresíduos de praguicidaspt-BR
dc.subjectrecursos hídricospt-BR
dc.titleVoltammetric Quantification of Paraquat and Glyphosate in Surface Watersen-US
dc.titleDeterminación voltamétrica de paraquat y glifosato en aguas superficialeses-ES
dc.titleDeterminação voltamétrica de paraquato e glifosato em águas superficiaispt-BR
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
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