Electrochemical behaviour of the Acharicide Methiocarb and its residues in soil and water samples

A selective and sensitive differential pulse adsorptive stripping Volta metric method used for the determination of methiocarb by using HMDE in universal buffer of pH range 2.0 to 6.0. The peak observed for the methiocarb are attributed to the reduction of carbonyl group and showed to be pH 4.0. A systematic study of various experimental conditions, such as pH, accumulation potential, accumulationtime and scan rate were studied. The relationship between peak current and methiocarb concentrations was linear within the concentration range of 1.0 x 10⁻⁵M to 1.0 x 10⁻⁹M. The lower detection was limit found to be 1.0 x 10⁻⁸M. The correlation coefficient and relative standard deviation obtained using the above procedure are found to be 0.992 and 1.38% respectively.The method is simple, sensitive and free from interferences of other pesticides. The method has been satisfactorily applied to the determination of methiocarb in water and soil samples.