New type of pH-sensitive insulator based on Sm-Ti salt
New C-V sensor based on pH-sensitive insulator with rare earth element salt Sm<sub>2</sub>TiO<sub>5 </sub>is described. Ph- characteristic in the range of 2-12 was shown to be linear with sensitivity about 60 mV/рН. This biosensor was tested for uric acid detection by immobilized uricase. The modified insulator is very perspective for semiconducting pH- electrodes as biosensors.