Benzene and Toluene Detection with a Quartz-Enhanced Photoacoustic Sensor

The analysis of Volatile Organic Compounds (VOCs) concentration in exhaled breath can be a promising approach for early and non-invasive diagnosis of different diseases. This work reports the detection of benzene and toluene molecules using a Quartz-Enhanced PhotoAcoustic Spectroscopy (QEPAS) sensor. These two molecules are VOCs commonly found in part-per-billion (ppb) level in the human exhaled breath.