versión impresa ISSN 0100-4042
PEDROSA, Valber de Albuquerque; CODOGNOTO, Lúcia y AVACA, Luis Alberto. Electroanalytical determination of 4-chilorophenol by square wave voltammetry on boron-doped diamond electrodes. Quím. Nova [online]. 2003, vol.26, n.6, pp. 844-849. ISSN 0100-4042. http://dx.doi.org/10.1590/S0100-40422003000600012.
The anodic voltammetric behavior of 4-chlorophenol (4-CF) in aqueous solution has been studied on a Boron-doped diamond electrode using square wave voltammetry (SWV). After optimization of the experimental conditions, 4-CF was analyzed in pure and natural waters using a Britton-Robinson buffer with pH = 6.0 as the supporting electrolyte. Oxidation occurs at 0.80 V vs Ag/AgCl in a two-electron process controlled by adsorption of the species. The detection limits obtained were 6.4 µg L-1 in pure water and 21.5 µg L-1 for polluted water taken from a local creek, respectively. The combination of square wave voltammetry and diamond electrodes is an interesting and desirable alternative for analytical determinations.
Palabras llave : 4-chlorophenol; square wave voltammetry; diamond electrodes.