Spectrophotometric determination of Carbendazim in its Formulations and Environmental samples

Two simple, sensitive, rapid, accurate and precise spectrophotometric methods were developed for the analysis of parts per million levels of widely used carbamate pesticide Carbendazim. The first proposed method A is based on the Oxidation followed by complex formation product with 2,2-Bipyridyl – Fe(III) to form orange colored chromophore exhibiting absorption maximum at 512 nm with apparent molar absorptivity 3.82x10 L mol cm and obeyed Beer’s law in the concentration range of 10 60μg/ml. The second method B is based on the extraction of pesticide and potassium Ferricynide Fe (III) to form bluish green colored product exhibiting absorption maximum at 478 nm with apparent molar absorptivity 4.46x10 L molcm and obeyed Beer’s law in the concentration range 440 μg/ml. The high percent recoveries indicates the accuracy and reliability of the validate methods. The proposed methods are highly sensitive, precise and accurate and therefore can be used for determination of carbendazim in its formulations and environmental samples.