FABRICATION AND APPLICATION OF A DIAMOND-FILM GLUCOSE BIOSENSOR BASEDON A H2O2 MICROARRAY ELECTRODE

A novel glucose biosensor, using a diamond film as insulating substrat e and H2O2 microarray electrodes as basic electrodes, has been fabrica ted. Compared with previous glucose sensors, the sensor in this resear ch has a greatly improved long-term stability. In the measurement in s tandard serums, co-existing substances did not interfere with the resu lts of the glucose response current. Furthermore, while testing glucos e concentrations of human blood serums, the results are comparable to those obtained with spectrophotometry. Their correlation coefficient w as 0.99. Measuring a blood sample of 12.0 mmol/l repeatedly, its varia tion coefficient was 4.7%, and its deviation was 0.38.