چكيده لاتين :
A fast, simple and sensitive square-wave voltammetric (SWV) method for the determination of trace amounts of furazolidone
(FZ) in urine is reported. A three-electrode system containing stationary mercury dropping (SMDE) working electrode, Pt
auxiliary electrode and Ag/AgCl reference electrode was used throughout. Briton-Rabinson buffer solution is used as both pH
adjusting agent and supporting electrolyte. The calibration graph showed good linearity in the concentration range of 20-900 ng
ml-1 of furazolidone with a regression coefficient of 0.9996. The equation ؤ(i) = 0.0095CFZ + 0.234 was used for calculation of
furazolidone concentration in the sample solution, where CFZ is the concentration of furazolidone in ng ml-1 and ؤ(i) is the
difference between voltammogram peak currents of sample and blank solution. The RSD for 8 replicate measurements of a 60 ng
ml-1 solution and LOD of the proposed method were found to be 2.2% and 5.2 ng ml-1, respectively. The procedure was
successfully applied to the determination of furazolidone in urine samples.
