ELECTRODE AND ELECTROCHEMICAL SENSOR FOR DIRECTLY MEASURING THE ALKALINE PHOSPHATASE CONTENT IN SOLUTIONS FOR BIOMEDICAL PURPOSES

摘要

The invention relates to a sensitive nanostructured electrode and to an impedimetric sensor for direct measuring of the alkaline phosphatase content in biological fluids, such as the human serum, for biomedical purposes. According to the invention, the electrode consists of a titanium dioxide nanotubes film (2), anodally grown on titanium (3), thermally treated in air at 550°C and vacuum coated with gold (4) and the claimed sensor has three electrodes (a sensitive electrode, a platinum counter-electrode and a reference electrode), and an electronic unit for electrochemical impedance spectrometry, meant to directly measure the alkaline phosphatase content in solutions, up to concentrations of 50 ng/ml.