▎ 摘　　要

NOVELTY - The utility model is new type relates to check for sensor technology field, especially relates to one kind for checking the kanamycin aptamer electrochemical electrode, wherein on glassy carbon electrode in turn down embellish with graphene polyaniline compound, polyamide-ammine type branch shape polymer-gold nano compound, kanamycin antibody, finally close electrode surface and for BSA and 10 of adenine base of single chain DNA. Preparation method is simple, stable performance, repeating character and good electrode is suitable for food safety in practical application and card detecting and biological sensor of the industrialization. Process cost and manufacture low electrode, which is suitable for the low cost requirement of industrialization. Taking glassy carbon electrode as fixing carrier fixed based on nucleic acid aptamer sandwich-type of electrochemical sensor system, can realize fast online and to kanamycin in food detection, the detection limit is 4.6 asterisk 10-6 mL-1.