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Electroanalytical determination of 4-nitrophenol by square wave voltammetry on diamond electrodes
| Content Provider | Scilit |
|---|---|
| Author | de A. Pedrosa, Valber Codognoto, Lúcia Avaca, Luis Alberto |
| Copyright Year | 2003 |
| 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. |
| Related Links | http://www.scielo.br/pdf/jbchs/v14n4/a07v14n4.pdf http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0103-50532003000400007&lng=en&nrm=iso&tlng=en |
| Ending Page | 535 |
| Page Count | 6 |
| Starting Page | 530 |
| ISSN | 01035053 |
| e-ISSN | 16784790 |
| DOI | 10.1590/s0103-50532003000400007 |
| Journal | Journal of the Brazilian Chemical Society |
| Issue Number | 4 |
| Volume Number | 14 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 2003-08-01 |
| Access Restriction | Open |
| Subject Keyword | Journal of the Brazilian Chemical Society Square Wave Voltammetry Diamond Electrodes |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
