An Electronic Tongue Based on SCV to Recognize Bacteria in the Cooling Water

An electronic tongue based on pulsed voltammetry was designed in this paper. It included five electrodes, three working electrodes (gold, glassy carbon, platinum), an Ag/AgCL reference electrode, and a platinum auxiliary electrode, and these were arranged in a standard three-electrode configuration, adopted Staircase Voltammetry (SCV) to recognize of sulfate-reducing bacteria and iron bacteria in contrast to Normal Pulse Voltammetry (NPV). Using of principal component analysis (PCA) to deal with measurement data of each electrode, to ascertain the three working electrodes´ different recognize ability. The result was that the discrimination of SCV is better. Finally it was found that the electronic tongue could differentiate the two bacteria.