Simple modifications on Sonogel-Carbon electrodes to obtain a new pH and T sensors. Target: reducing costs not value

In this work two new different sensors are developed: a pH sensor and a temperature probe. The former is based on a polyaniline (PANI) layer electrodeposited employing sinusoidal voltages and optimizing the deposition time (10-20 min). On the other hand, the temperature probe was designed taking advantage of the carbon nanotubes temperature properties. Both sensors were built on Sonogel-Carbon electrodes seeking cost effective devices. In both scenarios, results were satisfactory, the repeatability and reproducibility with values below 5%. Additionally, an excellent selectivity of the pH sensor was evaluated with the challenging interstitial matrix, prospecting an adequate future employment in real clinical samples.