Bahram Niazmand - Department of petroleum engineering, Islamic Azad University, Shahrood Branch , Shahrood , Iran
Afshin Farahbakhsh - Department of petroleum engineering, Islamic Azad University, Quchan , Quchan , Iran
Pouyan Foroughy Zadeh - Department of petroleum engineering, Islamic Azad University, Gachsaran Branch, Gachsaran, Iran
Mostafa Eghbaly - Department of petroleum engineering, Islamic Azad University, Shahrood Branch , Shahrood , Iran

In this paper a biosensor with urease Gold is one of the best and most modern materials has been improved by modifying the existing Biosensors are a large variety Electrodes with different genera based fixative that stabilizes different times to examine the work. This is important in order to be useful for a variety of biosensor and They have a lot of doubts and sometimes we make mistakes that we do with what type of biosensor that can be used This article helps us cultivate conditions that are associated with both strength and stability And their expected shelf life of the biosensor biosensor of your selection is of the highest returns To be the least time and money trying to provide good resistance.According to the concepts of urease biosensor modified with gold nano-particles with very high range of detection of urea And the lowest value and measure the best of the biosensor was diagnosed

Urea biosensor , Gold nanoparticles , Matrix , Electrochemical nanodevices