| dc.contributor | Universidade Estadual Paulista (UNESP) | |
| dc.creator | do Carmo, Devaney Ribeiro | |
| dc.creator | Paim, Leonardo Lataro | |
| dc.creator | Silvestrini, Daniela Rodrigues | |
| dc.creator | de Sa, Acelino Cardoso | |
| dc.creator | Bicalho, Urquisa de Oliveira | |
| dc.creator | Stradiotto, Nelson Ramos | |
| dc.date | 2014-05-20T13:29:56Z | |
| dc.date | 2014-05-20T13:29:56Z | |
| dc.date | 2011-04-01 | |
| dc.date.accessioned | 2017-04-05T20:15:29Z | |
| dc.date.available | 2017-04-05T20:15:29Z | |
| dc.identifier | International Journal of Electrochemical Science. Belgrade: Electrochemical Science Group, v. 6, n. 4, p. 1175-1188, 2011. | |
| dc.identifier | 1452-3981 | |
| dc.identifier | http://hdl.handle.net/11449/10146 | |
| dc.identifier | WOS:000289003800026 | |
| dc.identifier | WOS000289003800026.pdf | |
| dc.identifier | http://www.electrochemsci.org/papers/vol6/6041175.pdf | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/858134 | |
| dc.description | A novel nanostructured composite, azide copper octa (3-aminopropyl) octasilsesquioxane (ASCA) was incorporated into a graphite paste electrode and the electrochemical studies were conducted with cyclic voltammetry. The cyclic voltammogram of the modified graphite paste electrode with ASCA (GPE-ASCA), showed one redox couple with formal potential (E(theta)) = 0.30 V and an irreversible process at 1.1 V (vs Ag/AgCl; NaCl 1.0 mol L(-1); v = 20 mV s(-1)). The redox couple with (E(theta)) = 0.30V presents an electrocatalytic response for determination of ascorbic acid. The modified electrode gives a linear range from 1.0x10(-4) - 1.0x10(-3) mol L(-1) (r = 0.998) for the determination of ascorbic acid with detection limit of 6.9x10(-5) mol L(-1) and standard deviation of 2.3% for n = 3. The amperometric sensitivity was 122.1 mA/mol L(-1) for ascorbic acid. The application this electrode was tested and ascorbic acid in three commercial pharmaceutical product (Cebion, Cewin and Redoxon) have been determined. | |
| dc.description | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
| dc.language | eng | |
| dc.publisher | Electrochemical Science Group | |
| dc.relation | International Journal of Electrochemical Science | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.subject | Silsesquioxane | |
| dc.subject | ascorbic acid | |
| dc.subject | graphite paste electrode | |
| dc.subject | voltammetry | |
| dc.subject | modified electrode | |
| dc.title | Voltammetric Behavior of a Modified Electrode With Azide Copper Octa(3-Aminopropyl)Octasilsesquioxane Composite in the Oxidation of Ascorbic Acid | |
| dc.type | Otro | |
