adsorption controlled and involves one electron. Linear calibration plot between the
oxidation peak current and the tyrosine concentration was in the range of 5ื10-7 to 1ื10-5 M and
1ื10-5 to 2.0ื10-4 M with a correlation coefficient of 0.999 and 0.997, respectively. Detection limit of
tyrosine was found to be 1ื10-8 M by differential pulse voltammetric technique. The effect of pH and scan
rate of tyrosine was studied. The analytical performance of this sensor was evaluated for the detection of
tyrosine in real samples.