The electrode carbon paste molecularly imprinted polymer (MIP) has been developed to analyze glucose by potentiometry. The MIP was made by mixing glucose as a template, methacrylic acid as monomer and ethylene glycol dimethacrylate as a crosslinker with the mole ratio of 1: 4: 12. The electrode made by mixing activated carbon, MIP, and paraffin with the ratio 50: 35: 15 (%, w/w) was observed to perform optimally. The results obtained show that analysis of glucose gives optimum results at pH 5 (without the pH adjustment). The analysis of glucose using electrodes carbon paste/MIP gives Nernst factor is 28.80 mV/decade, the measurement range is 10-2 - 10-5 M and the limit of detection is 5.87.10-5 M. In this study can be known that urea did not interfere the analysis of glucose using this method. The accuracy of this electrode is 70.7 - 129% and the coefficient of variation is 0.06 - 0.18% for the concentration range 10-5 - 10-2 M. This electrode showed response time less than 2 minutes and could be used for 145 times.
- Electrode carbon paste
- Molecularly imprinted polymer