The PolySense team has just published a new article on Optics & Laser Technology journal (IF 5.0) reporting on a Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS)-based sensor for sequentially measuring carbon monoxide (CO), nitrous oxide (N2O), and water vapor emissions near vehicle exhaust pipes. With detection limits of 150 ppb for N2O and 91 ppb for CO, this sensor allows for precise emission measurements. Moreover, the 300 ms temporal resolution enables real-time tracking of emission variations with a detailed temporal analysis. Field tests at the University of Bari Campus parking area confirmed the sensor capability to capture CO concentration fluctuations from both idling and moving vehicles.
The following link provides access to the article:
http://polysense.poliba.it/wp-content/uploads/2025/09/1-s2.0-S0030399225014707-main.pdf
