Determinação de peróxido de hidrogênio em antisséptico bucal usando um microdispositivo contendo partículas de Azul da Prússia
oleh: Rodrigo Amorim Bezerra da Silva, Rodrigo Henrique de Oliveira Montes, Rodrigo Alejandro Abarza Munoz, Eduardo Mathias Richter
| Format: | Article |
|---|---|
| Diterbitkan: | Sociedade Brasileira de Química 2011-01-01 |
Deskripsi
A simple flow-injection amperometric procedure using a three-electrode-integrated sensor for the determination of H2O2 in antiseptic mouthwash is reported. This method involves the use of a working composite electrode modified with Prussian Blue (PB) particles that was easily adapted as detector in FIA. The best amperometric response was observed for a composite containing 30% of graphite modified with PB particles (GAP) and 70% of pure graphite (GR). The proposed method presents a linear response in the range of 10 to 200 μmol L-1. The detection and quantification limits were 0.8 and 2.6 μmol L-1, respectively.