Electrochemical Gas Sensors of High Sensitivity Using Nanoparticles

Flow through cell for amperometric and voltammetric determination of inorganic and organic electroactive gases.

The high sensitivity is achieved by creating high surface area electrodes with roughness factors of up to 500 using nanoparticles of platinum or gold embedded in Nafion ion-exchange membranes.

Amperometric detection of actetaldehyde and ethanol in concentration steps of 25 ppb.