Preparation and Properties of Tyrosine Molecularly Imprinted Electrochemical Sensor

A novel molecularly imprinted electrochemical sensor was prepared with chitosan as functional matrix and Ltyrosine(L-Tyr)as template molecule by potentiostatic electrodeposition.According to our experimental results,the molecular imprinted polymer(MIP)sensor with an imprinted factor of 3.34 showed well sensitivity and good selectivity to L?Tyr among the structural similarities and co-existences.The oxidation peak currents of differential pulse voltammetry were linear to the concentration of L-Tyr in the range from 4.0×10-7 to 1.0×10-4 mol·L-1 with a detection limit of 2.0×10-7 mol·L-1.Furthermore,the recoveries ranged from 89.50%to 99.67% were obtained when the sensor was applied to real samples analysis.