▎ 摘　　要

NOVELTY - Preparing molecularly imprinted composite paste electrode sensor involves preparing nano-dysprosium nitride/nano-strontium titanate/graphene oxide composite paste electrode. The composite paste electrode uses nano dysprosium nitride, nano strontium titanate and graphene oxide as conductive materials with 1-aminopropyl-3-methylimidazole hexafluorophosphate as adhesive, and triethanolamine and ethanol as dispersant. The aconitic acid is used as functional monomer in aqueous solution under oxygen-free atmosphere. The methylene bisacrylamide is used as cross-linking agent, azobis-isoheptanonitrile as initiator, and ribavirin as template for cross-linking polymerization to prepare ribavirin molecularly imprinted polymer. USE - Method for preparing molecularly imprinted composite paste electrode sensor for detecting ribavirin. ADVANTAGE - The method has good response performance, selectivity and high sensitivity, combines the molecular imprinting technology, layer-by-layer self-assembly method and drop coating method. DETAILED DESCRIPTION - Preparing molecularly imprinted composite paste electrode sensor involves preparing nano-dysprosium nitride/nano-strontium titanate/graphene oxide composite paste electrode. The composite paste electrode uses nano dysprosium nitride, nano strontium titanate and graphene oxide as conductive materials with 1-aminopropyl-3-methylimidazole hexafluorophosphate as adhesive, and triethanolamine and ethanol as dispersant. The aconitic acid is used as functional monomer in aqueous solution under oxygen-free atmosphere. The methylene bisacrylamide is used as cross-linking agent, azobis-isoheptanonitrile as initiator, and ribavirin as template for cross-linking polymerization to prepare ribavirin molecularly imprinted polymer. The N,N-dimethylformamide and ribavirin molecularly imprinted polymer are added and then heated and dissolved to prepare ribavirin molecularly imprinted polymer modification solution. The ribavirin molecularly imprinted polymer modified liquid is dripped onto nano dysprosium nitride/nano strontium titanate/graphene oxide composite paste electrode by drip coating method. The solvent is volatilized. The template molecule is removed to obtain ribavirin molecularly imprinted composite paste electrode sensor. An INDEPENDENT CLAIM is included for a method for performing detection of ribavirin, which involves: (A) forming set of ribavirin standard solutions of different concentrations includes blank standard samples, base solution is NaAc-HAc buffer solution of pH of 4.8, using silver/silver chloride as reference electrode, platinum wire electrode is auxiliary electrode, sub-print composite paste electrode sensor is working electrode to form three-electrode system, connecting to electrochemical workstation in K3(Fe(CN)6) in solution, using cyclic voltammetry to detect in the potential range of (-)0.8-1.0 volt, recording response current of the blank standard sample as I0, response current of the standard solution containing different concentrations of ribavirin is Ii, difference of the response current reduction value delta I is I0-Ii, drawing working curve of deltaI-c according to the linear relationship between deltaI and the mass concentration c of the standard solution of Faribavirin, replacing standard solution of ribavirin with the sample to be tested, and performing detection; and (B) obtaining content of ribavirin in the sample to be tested according to the difference deltaI of the response current reduction and working curve.