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Preparation and Properties of Tyrosine Molecularly Imprinted Electrochemical Sensor
Pages: 403-408
Year: Issue:  4
Journal: Journal of Huaqiao University(Natural Science)

Keyword:  Ltyrosinemolecular imprintingelectrochemical sensorchitosan;
Abstract: A novel molecularly imprinted electrochemical sensor was prepared with chitosan as functional matrix and L-tyrosine (L-Tyr)as template molecule by potentiostatic electrodeposition.According to our experimental results,the mo-lecular 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 ap-plied to real samples analysis.
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