▎ 摘　　要

NOVELTY - A current type nitrite sensor based on bionic enzyme ion selection film comprises a working electrode (102), a porous conductive framework (103), a chemically modified conductive particle (104) and a bionic enzyme ion selection film. The porous conductive framework is located on the surface of the working electrode. The porous conductive framework and the bionic enzyme ion selective membrane are covalently bonded by the chemically modified conductive particles. The material of the bionic enzyme ion selective membrane comprises at least one of vitamin, protein, metal oxide and polymer with chelate function of nitrite radical. USE - A current type nitrite sensor based on bionic enzyme ion selection film used in nitrite content detection (claimed). ADVANTAGE - The current type nitrite sensor is capable of effectively considering the sensitivity and specificity of the nitrite content detection. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing current type nitrite sensor based on bionic enzyme ion selection film, which involves dispersing the material of the porous conductive framework and the chemically modified conductive particles in a solvent to prepare a dispersion liquid, mixing the material of the bionic enzyme ion selective membrane with the dispersion liquid to prepare electrode modification liquid, transferring the electrode modification liquid to the surface of the working electrode to prepare a sensor preform and carrying out heat treatment on the sensor preform. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a current type nitrite sensor based on bionic enzyme ion selection film. 102Working electrode 103Porous conductive framework 104Chemically modified conductive particle