Polarographic Behaviour and Analysis of Permethrin

The electrochemical reduction behaviour of Permethrin has been carried out, by employing d.c. polarography, cyclic voltammetry (CV) and differential pulse polarography (DPP) in the supporting electrolytes of the pH ranging from 2.0 to 12.0. The nature of electrode process was studied, the number of electrons was evaluated and the reduction mechanism was proposed. Kinetic parameters such as transfer coefficient, diffusion coefficient and heterogeneous forward rate constant are evaluated and reported. Quantitative determination was carried out in the concentration range 1.5×10 M to 2.5×10 M using a differential pulse polarographic method, with a lower detection limit of 2.0×10 M. The propounded technique was successfully applied in the quantitative estimation of Permethrin in various agricultural formulations using standard addition and calibration method.