Paper-based ion-selective potentiometric sensors.

  title={Paper-based ion-selective potentiometric sensors.},
  author={Marta Novell and Marc Parrilla and Gaston A Crespo and F. Xavier Rius and Francisco J Andrade},
  journal={Analytical chemistry},
  volume={84 11},
A new approach to develop ultra low-cost, robust, rugged, and disposable potentiometric sensors is presented. A suspension of carbon nanotubes in a water-surfactant mixture (carbon nanotubes ink) is applied on conventional filter papers to turn them into conductive papers, which are then used as a substrate to build ion-selective electrodes. The electrodes are made by drop casting a membrane on a small circular area of the conductive paper. In this way, the carbon nanotubes act as both electric… CONTINUE READING