Patent ID: 8568825

Claim:
A process for manufacturing a sensor for the simultaneous detection of inorganic contaminants of water comprising: providing a conducting support; adding a (3-mercaptopropyl) trimethoxysilane (MPTS) sol thereto; forming a silicate network modified support from the MPTS; preparing a mixture containing citrate stabilized gold nanoparticulates; soaking the silicate network modified support in the mixture containing citrate stabilized gold nanoparticulates to immobilize the gold nanoparticulates on the silicate network modified support; preparing a solution of hydroxylamine and chloroauric acid; shaking the solution of hydroxylamine and chloroauric acid; and placing the conducting support inside the solution of hydroxylamine and chloroauric acid, to obtain the sensor, wherein shaking the solution of hydroxylamine and chloroauric acid occurs at 200 to 500 rpm.