The PolySense team has just published a new article on Photoacoustics Journal Elsevier (IF 7.1) reporting on a ppb-level sulfur dioxide (SO2) monitoring platform by exploiting standard photoacoustic spectroscopy and a novel, highly stable UV laser. A 266.22 nm LD-pumped solid-state, acousto-optic modulator Q-switched laser. An ultimate detection limit of 3 ppb for SO2 detection in N2 was demonstrated with 1 s integration time, in laboratory environment. Continuous outdoor monitoring for five days verified the excellent stability and reliability of the reported SO2 photoacoustics sensor.
The following link provides access to the article:
http://polysense.poliba.it/wp-content/uploads/2025/02/Sufur-dioxide-PAS-_Photoacoustics-2025.pdf
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