Please use this identifier to cite or link to this item:
- Voltammetric studies of titanium (IV) phosphate modified with copper hexacyanoferrate and electroanalytical determination of N-acetylcysteine
- Universidade Estadual Paulista (UNESP)
- Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
- FAPESP: 03/12882-6
- FAPESP: 07/57678-8
- Titanium (IV) Phosphate copper hexacyanoferrate composite (TiPhCuHCF) was prepared using a new methodology for the synthesis. A preliminary characterization of the precursor and resulting materials was defined using spectroscopic and chemical techniques. The cyclic voltammogram of the modified electrode containing TiPhCuHCF exhibited two redox couples. The first and second redox couples present a formal potential (E(theta')) of 0.18 and 0.76 V and were ascribed to the Cu(+/)Cu(2+) (E(theta'))(1) and Fe(2+)(CN)(6)/Fe(3+)(CN)(6) (E(theta'))(2) processes, respectively. In a preliminary study, the peak located at 0.76 V displays a sensitive response to N-acetylcysteine. The modified graphite paste electrode showed a linear range from 1.0 x 10(-5) to 7.0 x 10(-4) mol L(-1) for the determination of N-acetylcysteine with a limit detection of 6.96 x 10(-5) mol L(-1) and relative standard deviation of +/- 5% (n = 3) and amperometric sensitivity of 24.79 x 10(-3) A mol L(-1). The modified electrode was electrochemically stable and showed good reproducibility.
- Journal of Applied Electrochemistry. Dordrecht: Springer, v. 41, n. 7, p. 787-793, 2011.
- Titanium (IV) phosphate
- Cyclic voltammetry
- Copper hexacyanoferrate
- Acesso restrito
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.