Abstract

A sensitive method for the determination of pyrethorid cyphenothrin by differential pulse adsorptive stripping
voltammetry at a hanging mercury drop electrode (HMDE)(pH6.0) was described. The cyclic voltagramms
demonstrate the adsorption of these compounds at the mercury electrode. A symmetric study of the various
operational parameters that affect the stripping response was carried out by the differential pulse voltammetry.
With an accumulation potential of -0.6V and 60 s an accumulation time, the limit of detection was 2.45x10-8
mol/L to 1.5x10-8 mol/L, the relative standard deviation (n=10) correlation coefficient values 0.995, 1.1%
respectively. Finally the proposed method was applied for determination of the cyphenothrin in storage bags of
wheat and rice under FCI’s storage system.