Abstract:Nitrite is one of the most commonly used food additives, which imparts better flavour, texture and aroma to foods, preserves the reddish-pink colour of meat and prevents the risk of bacterial contamination of cured meat. However, the misuse and potential toxicity of nitrite pose a great threat to human health, so it is particularly important to develop effective and reliable methods for the detection of nitrite. Carbon-based nanocomposites have shown great potential in the field of electrochemical sensors due to their many excellent properties. In this paper, the mechanism of carbon-based nanocomposites for electrochemical detection of nitrite is introduced, the research results of carbon-based nanocomposites as electrocatalysts in nitrite sensing and detection were overviewed in different dimensions, the problems and challenges of electrochemical sensors of carbon matrix nanocomposites in nitrite analysis and detection are proposed, and finally, the future development trend of these materials is prospected.