A highly sensitive voltammetric platform for analysis of nitrite in foodstuff

Nitrite can be prevents from bacterial growth and therefore it used for the meat curing. Also this compound is an important reducing agent, in a reaction with the meat s myoglobin, gives the product a desirable pink-red fresh color. It has important role in food industrial because nitrite can interact with amines to produce nitrosamines, which are well-known as carcinogenic substances [1]. The high value of nitrite content in the human blood results a decrease in oxygen transportation by the human blood follow-on methemoglobinemia, blue baby syndrome” which is the reaction of nitrite with Fe (II), resulting transformation of hemoglobin to methemoglobin (HbFe (III)) [2]. According to the above points, the assay of nitrite is vital in environmental safety. The aim of the present study was usinCuO nanoparticles and ionic liquid for modification of carbon paste electrode. The proposed sensor was applied to the determination of nitrite. The plot of oxidation signal vs. concentration of nitrite was linear in the range of 0.03 to 500.0 μM. The new sensor was also examined for the determination of nitrite in food samples.