Electrochemical behavior and polarographic assay of nitroxynil

Nitroxynil is an anthelmintic veterinary drug used in prophylaxis and treatment of hepatic distomatosis. A simple method for its identification and determination in pharmaceutical parenteral solutions is described. The method is based on electrochemical reduction of the nitro group at the dropping mercury electrode. The ac and dc polarographic and cyclic voltammetric responses of the drug are reported. Accuracy and precision of the method are good, and sample preparation is easy.