Abstract: Voltammetric measurements were performed using a static Hg drop electrode, a Ag/AgCl/KCl (saturated) reference electrode and Pt-wire counter electrode. Cyclic voltammograms of bromofenoxim (I) in Britton-Robinson (BR) buffer of pH 7 were obtained at 200 mV/s. Two well defined reductive peaks were observed at -0.38 and -0.54 V. The peak at -0.38 V was used for subsequent measurements of I. For analysis by square-wave voltammetry, the calibration graph was linear for 0.0011-1.3 µM-I and the detection limit was 0.1 µg/l. The in situ formation and dynamic properties of Hg film-coated glassy C electrodes for the determination of I by FIA were investigated; 0.5 M KNO3/20 mM BR buffer of pH 7 was used as carrier and amperometric detection was at -0.7 V vs. Ag/AgCl. The response was linear for 0.11-9 µM-I with a detection limit of 10 µg/l. The RSD (n = 25) was 3.2%.