Thamarai selvi, J2017-02-172017-02-172010https://ir.avinuty.ac.in/handle/avu/1482A lieterogeneous precipitate has been as ion carriers for the preparation of urea and oxalic acid selective membrane sensor. The electrodes give near-N'emstian response in the linear concentration range of 1 M to 1x10' M \s ith detection limits of ilie orders of lO"* M . fhe stable potentiometric signals are obtained \Gth in a short time period ot 3 seconds. Tlie effect of pli and the effect of medium have been studied, found to give a better responses selectisit) coefficient \alues pot ( log ) and ( log o^al'cacid n.xed interference method. Tlie sensors have also been used as urea determination in fertilizers.