Electroanalytical Methodology for the Direct Determination of 2,4-Dichlorophenoxyacetic Acid in Soil Samples Using a Graphite-Polyurethane Electrode
An electroanalytical methodology was developed for the direct determination of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) using a graphite-polyurethane composite electrode and square wave voltammetry (SWV). 2,4-D exhibited one reduction peak with characteristics of an irreversible process...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | International Journal of Electrochemistry |
| Online Access: | http://dx.doi.org/10.1155/2014/308926 |
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| author | Fernanda Ramos de Andrade Renata Alves de Toledo Carlos Manoel Pedro Vaz |
| author_facet | Fernanda Ramos de Andrade Renata Alves de Toledo Carlos Manoel Pedro Vaz |
| author_sort | Fernanda Ramos de Andrade |
| collection | DOAJ |
| description | An electroanalytical methodology was developed for the direct determination of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) using a graphite-polyurethane composite electrode and square wave voltammetry (SWV). 2,4-D exhibited one reduction peak with characteristics of an irreversible process at −0.54 V (versus Ag/AgCl), which is controlled by the diffusion of the reagent on the electrode surface. After the experimental parameters optimization (pH 2.0, f=50 s−1, a=0.50 V, and ΔEi=0.03 V), analytical curves were constructed in the range of 0.66 mg L−1 to 2.62 mg L−1. Detection (LD) and quantification (LQ) limits were 17.6 μg L−1 and 58.6 μg L−1, respectively. The methodology was successfully applied to measure the percolation of the herbicide 2,4-D in undisturbed soil columns of different granulometric compositions. |
| format | Article |
| id | doaj-art-aeef8a27d2e044b5b85e3c8647f70598 |
| institution | Kabale University |
| issn | 2090-3529 2090-3537 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Electrochemistry |
| spelling | doaj-art-aeef8a27d2e044b5b85e3c8647f705982025-02-03T06:13:07ZengWileyInternational Journal of Electrochemistry2090-35292090-35372014-01-01201410.1155/2014/308926308926Electroanalytical Methodology for the Direct Determination of 2,4-Dichlorophenoxyacetic Acid in Soil Samples Using a Graphite-Polyurethane ElectrodeFernanda Ramos de Andrade0Renata Alves de Toledo1Carlos Manoel Pedro Vaz2Brazilian Agricultural Research Corporation, Embrapa Instrumentation, Rua XV de Novembro 1452, 13560-970, São Carlos, SP, BrazilBrazilian Agricultural Research Corporation, Embrapa Instrumentation, Rua XV de Novembro 1452, 13560-970, São Carlos, SP, BrazilBrazilian Agricultural Research Corporation, Embrapa Instrumentation, Rua XV de Novembro 1452, 13560-970, São Carlos, SP, BrazilAn electroanalytical methodology was developed for the direct determination of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) using a graphite-polyurethane composite electrode and square wave voltammetry (SWV). 2,4-D exhibited one reduction peak with characteristics of an irreversible process at −0.54 V (versus Ag/AgCl), which is controlled by the diffusion of the reagent on the electrode surface. After the experimental parameters optimization (pH 2.0, f=50 s−1, a=0.50 V, and ΔEi=0.03 V), analytical curves were constructed in the range of 0.66 mg L−1 to 2.62 mg L−1. Detection (LD) and quantification (LQ) limits were 17.6 μg L−1 and 58.6 μg L−1, respectively. The methodology was successfully applied to measure the percolation of the herbicide 2,4-D in undisturbed soil columns of different granulometric compositions.http://dx.doi.org/10.1155/2014/308926 |
| spellingShingle | Fernanda Ramos de Andrade Renata Alves de Toledo Carlos Manoel Pedro Vaz Electroanalytical Methodology for the Direct Determination of 2,4-Dichlorophenoxyacetic Acid in Soil Samples Using a Graphite-Polyurethane Electrode International Journal of Electrochemistry |
| title | Electroanalytical Methodology for the Direct Determination of 2,4-Dichlorophenoxyacetic Acid in Soil Samples Using a Graphite-Polyurethane Electrode |
| title_full | Electroanalytical Methodology for the Direct Determination of 2,4-Dichlorophenoxyacetic Acid in Soil Samples Using a Graphite-Polyurethane Electrode |
| title_fullStr | Electroanalytical Methodology for the Direct Determination of 2,4-Dichlorophenoxyacetic Acid in Soil Samples Using a Graphite-Polyurethane Electrode |
| title_full_unstemmed | Electroanalytical Methodology for the Direct Determination of 2,4-Dichlorophenoxyacetic Acid in Soil Samples Using a Graphite-Polyurethane Electrode |
| title_short | Electroanalytical Methodology for the Direct Determination of 2,4-Dichlorophenoxyacetic Acid in Soil Samples Using a Graphite-Polyurethane Electrode |
| title_sort | electroanalytical methodology for the direct determination of 2 4 dichlorophenoxyacetic acid in soil samples using a graphite polyurethane electrode |
| url | http://dx.doi.org/10.1155/2014/308926 |
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