Research Progress on Nitrite Electrochemical Sensor

Nitrite has been widely used in industrial and agricultural production and is commonly found in food, drinking water, biology and environment. However, nitrite is a toxic inorganic pollutant that is very harmful to the health of human and other organisms. A variety of strategies have been proposed for nitrite detection in recent years. Among which, electrochemical approaches have gained more and more attention owing to the characteristics of simplicity, speediness, high sensitivity, and low cost, etc. The principle of nitrite electrochemical sensor is recommended in this review. The research progresses of nanocomposite material sensor for electrochemical nitrite detection based on carbon material, metal material, metal organic framework, conducting polymer and enzyme in recent years are also introduced from the perspective of composite electrode modification layer. The construction approaches and sensing performances of modified electrode are put special emphasis. At last, future trends of nitrite electrochemical sensor are discussed.