Electroanalytical determination of 4-nitrophenol by square wave voltammetry on diamond electrodes
The anodic voltammetric behavior of 4-Nitrophenol on a Boron-doped diamond electrode in aqueous solution has been studied using square wave voltammetry. After optimization of the experimental conditions, that model molecule was analyzed in pure water solutions using a Britton-Robinson buffer with pH...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2003-01-01
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| Series: | Journal of the Brazilian Chemical Society |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000400007 |
| _version_ | 1818149119933284352 |
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| author | Pedrosa Valber de A. Codognoto Lúcia Avaca Luis Alberto |
| author_facet | Pedrosa Valber de A. Codognoto Lúcia Avaca Luis Alberto |
| author_sort | Pedrosa Valber de A. |
| collection | DOAJ |
| description | The anodic voltammetric behavior of 4-Nitrophenol on a Boron-doped diamond electrode in aqueous solution has been studied using square wave voltammetry. After optimization of the experimental conditions, that model molecule was analyzed in pure water solutions using a Britton-Robinson buffer with pH 6.0 as the supporting electrolyte. Oxidation occurs at 1.0 V vs. Ag/AgCl in an irreversible two-electron process controlled by adsorption of the species. The detection limit (DL) obtained was 2.8 mug L-1. This result was comparable to that obtained from reduction of the molecule at -0.8 V vs. Ag/AgCl under the same experimental conditions (DL = 4.2 mug L-1). Both DL values are within the limits required by the legislation for drinking water (30 mug L-1). The combination of square wave voltammetry and diamond electrodes has proved to be an interesting and desirable alternative for the analytical determination of organic molecules. |
| first_indexed | 2024-12-11T13:01:59Z |
| format | Article |
| id | doaj.art-8cfffaded0e049eba1dadedf0cdd1cfd |
| institution | Directory Open Access Journal |
| issn | 0103-5053 |
| language | English |
| last_indexed | 2024-12-11T13:01:59Z |
| publishDate | 2003-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Journal of the Brazilian Chemical Society |
| spelling | doaj.art-8cfffaded0e049eba1dadedf0cdd1cfd2022-12-22T01:06:26ZengSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society0103-50532003-01-01144530535Electroanalytical determination of 4-nitrophenol by square wave voltammetry on diamond electrodesPedrosa Valber de A.Codognoto LúciaAvaca Luis AlbertoThe anodic voltammetric behavior of 4-Nitrophenol on a Boron-doped diamond electrode in aqueous solution has been studied using square wave voltammetry. After optimization of the experimental conditions, that model molecule was analyzed in pure water solutions using a Britton-Robinson buffer with pH 6.0 as the supporting electrolyte. Oxidation occurs at 1.0 V vs. Ag/AgCl in an irreversible two-electron process controlled by adsorption of the species. The detection limit (DL) obtained was 2.8 mug L-1. This result was comparable to that obtained from reduction of the molecule at -0.8 V vs. Ag/AgCl under the same experimental conditions (DL = 4.2 mug L-1). Both DL values are within the limits required by the legislation for drinking water (30 mug L-1). The combination of square wave voltammetry and diamond electrodes has proved to be an interesting and desirable alternative for the analytical determination of organic molecules.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-505320030004000074-nitrophenolsquare wave voltammetrydiamond electrodes |
| spellingShingle | Pedrosa Valber de A. Codognoto Lúcia Avaca Luis Alberto Electroanalytical determination of 4-nitrophenol by square wave voltammetry on diamond electrodes Journal of the Brazilian Chemical Society 4-nitrophenol square wave voltammetry diamond electrodes |
| title | Electroanalytical determination of 4-nitrophenol by square wave voltammetry on diamond electrodes |
| title_full | Electroanalytical determination of 4-nitrophenol by square wave voltammetry on diamond electrodes |
| title_fullStr | Electroanalytical determination of 4-nitrophenol by square wave voltammetry on diamond electrodes |
| title_full_unstemmed | Electroanalytical determination of 4-nitrophenol by square wave voltammetry on diamond electrodes |
| title_short | Electroanalytical determination of 4-nitrophenol by square wave voltammetry on diamond electrodes |
| title_sort | electroanalytical determination of 4 nitrophenol by square wave voltammetry on diamond electrodes |
| topic | 4-nitrophenol square wave voltammetry diamond electrodes |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000400007 |
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