dc.creator | PENA, Roselyn C. | |
dc.creator | GAMBOA, Juan C. M. | |
dc.creator | PAIXAO, Thiago R. L. C. | |
dc.creator | BERTOTTI, Mauro | |
dc.date.accessioned | 2012-10-20T05:23:08Z | |
dc.date.accessioned | 2018-07-04T15:49:04Z | |
dc.date.available | 2012-10-20T05:23:08Z | |
dc.date.available | 2018-07-04T15:49:04Z | |
dc.date.created | 2012-10-20T05:23:08Z | |
dc.date.issued | 2009 | |
dc.identifier | MICROCHIMICA ACTA, v.166, n.3/Abr, p.277-281, 2009 | |
dc.identifier | 0026-3672 | |
dc.identifier | http://producao.usp.br/handle/BDPI/31163 | |
dc.identifier | 10.1007/s00604-009-0196-5 | |
dc.identifier | http://dx.doi.org/10.1007/s00604-009-0196-5 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1627801 | |
dc.description.abstract | Hydrogen peroxide was determined in oral antiseptic and bleach samples using a flow-injection system with amperometric detection. A glassy carbon electrode modified by electrochemical deposition of ruthenium oxide hexacyanoferrate was used as working electrode and a homemade Ag/AgCl (saturated KCl) electrode and a platinum wire were used as reference and counter electrodes, respectively. The electrocatalytic reduction process allowed the determination of hydrogen peroxide at 0.0 V. A linear relationship between the cathodic peak current and concentration of hydrogen peroxide was obtained in the range 10-5000 mu mol L(-1) with detection and quantification limits of 1.7 (S/N = 3) and 5.9 (S/N = 10) mu mol L(-1), respectively. The repeatability of the method was evaluated using a 500 mu mol L(-1) hydrogen peroxide solution, the value obtained being 1.6% (n = 14). A sampling rate of 112 samples h(-1) was achieved at optimised conditions. The method was employed for the quantification of hydrogen peroxide in two commercial samples and the results were in agreement with those obtained by using a recommended procedure. | |
dc.language | eng | |
dc.publisher | SPRINGER WIEN | |
dc.relation | Microchimica Acta | |
dc.rights | Copyright SPRINGER WIEN | |
dc.rights | restrictedAccess | |
dc.subject | Hydrogen peroxide | |
dc.subject | FIA | |
dc.subject | Modified electrode | |
dc.subject | Amperometric detection | |
dc.title | Flow injection amperometric determination of hydrogen peroxide in household commercial products with a ruthenium oxide hexacyanoferrate modified electrode | |
dc.type | Artículos de revistas | |