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Abstract
Cathodic stripping voltammetry was used to determine the antibacterial drug Nitrofurantoin in phosphate buffer (pH 5.5). The adsorptive peak was observed at −0.173 V vs. Ag/AgCl. The peak response was characterized with respect to pH, preconcetration time, possible interferences, deposition potential, supporting electrolytes and other variables. The obtained results were analyzed and the statistical parameters were calculated. Also the method was applied to determine the mentioned drug in pharmaceutical formulations and urine. The limit of detection was 1 × 10−9 mol dm−3.