Improvement of the electrochemical determination of antioxidant using cationic micellar environment
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| Format: | Artículo científico |
| Language: | en |
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Universidade Estadual de Maringá
2010
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| _version_ | 1876441041174790144 |
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| author | Lucilene Dornelles Mello |
| author_facet | Lucilene Dornelles Mello |
| contents | Improvement of the electrochemical determination of antioxidant using cationic micellar environment Lucilene Dornelles Mello Alaécio Pinheiro dos Reis Lauro Tatsuo Kubota Ingeniería Ascorbic acid micellar system cationic surfactant Ascorbic acid (AA) is an important compound of the human diet, in the metabolism acting mainly as exogenous antioxidant. A method for electrochemical detection of Ascorbic acid (AA) with a GCE was developed using a cationic surfactant cetylpyridinium chloride (CPC). The presence of CPC influences the electrochemical behaviour of AA, reduces the applied potential to measure AA oxidation followed by an increase in the peak current. In the optimized conditions the AA determination was possible in the linear range of 5.0 x 10-7 mol L-1 - 4.3 x 10-4 mol L-1 with a detection limit (S/N = 3) of 2.0 x 10-7 mol L-1. The applicability of the method is in the sensitivity and selectivity of the GCE for the AA detection as well as the simplicity of the demonstrated method using an electrode without modifying and without pre-treatment of samples. Recovery tests presented values of 98 - 103% suggesting the method has no significant interference and making possible to be successfully used for AA determination in complex samples. 2010 artículo científico 1806-2563 https://www.redalyc.org/articulo.oa?id=303226529014 en http://www.redalyc.org/revista.oa?id=3032 Acta Scientiarum. Technology application/pdf Universidade Estadual de Maringá Acta Scientiarum. Technology (Brasil) Num.4 Vol.32 |
| format | Artículo científico |
| id | redalyc_303226529014 |
| institution | Redalyc |
| language | en |
| publishDate | 2010 |
| publisher | Universidade Estadual de Maringá |
| spellingShingle | Improvement of the electrochemical determination of antioxidant using cationic micellar environment Lucilene Dornelles Mello Ingeniería Ascorbic acid micellar system cationic surfactant Improvement of the electrochemical determination of antioxidant using cationic micellar environment Lucilene Dornelles Mello Alaécio Pinheiro dos Reis Lauro Tatsuo Kubota Ingeniería Ascorbic acid micellar system cationic surfactant Ascorbic acid (AA) is an important compound of the human diet, in the metabolism acting mainly as exogenous antioxidant. A method for electrochemical detection of Ascorbic acid (AA) with a GCE was developed using a cationic surfactant cetylpyridinium chloride (CPC). The presence of CPC influences the electrochemical behaviour of AA, reduces the applied potential to measure AA oxidation followed by an increase in the peak current. In the optimized conditions the AA determination was possible in the linear range of 5.0 x 10-7 mol L-1 - 4.3 x 10-4 mol L-1 with a detection limit (S/N = 3) of 2.0 x 10-7 mol L-1. The applicability of the method is in the sensitivity and selectivity of the GCE for the AA detection as well as the simplicity of the demonstrated method using an electrode without modifying and without pre-treatment of samples. Recovery tests presented values of 98 - 103% suggesting the method has no significant interference and making possible to be successfully used for AA determination in complex samples. 2010 artículo científico 1806-2563 https://www.redalyc.org/articulo.oa?id=303226529014 en http://www.redalyc.org/revista.oa?id=3032 Acta Scientiarum. Technology application/pdf Universidade Estadual de Maringá Acta Scientiarum. Technology (Brasil) Num.4 Vol.32 |
| title | Improvement of the electrochemical determination of antioxidant using cationic micellar environment |
| topic | Ingeniería Ascorbic acid micellar system cationic surfactant |
| url | https://www.redalyc.org/articulo.oa?id=303226529014 |