The joint EU-Russian Innovative nanostructured optochemical sensors (INGENIOUS) project has demonstrated a new ultrasensitive sensor that detects and differentiates benzene, toluene and xylene gases. Because the new sensor can detect the gases at low concentrations and without pre-filtering, it could enable smaller, cheaper and more portable systems for monitoring these gases. Benzene, toluene and xylene – known as BTX gases – are industrially important products particularly in the petrochemi...