Photoacoustic detection of ozone with a red laser diode

• Published in: Talanta (Oxford) Vol. 223; no. Pt 2; p. 121890
• Main Authors: Keeratirawee, Kanchalar, Hauser, Peter C.
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.02.2021
• Subjects: calibration; detection limit; diodes; light; measurement; MEMS microphone; microphones; Ozone; Photoacoustic spectroscopy; Red laser diode; MEMS microphone; Ozone; Photoacoustic spectroscopy; Red laser diode

The photoacoustic detection of ozone using the Chappuis band is demonstrated. A visible red laser diode emitting at 638 nm was employed as a light source. The photoacoustic cell consisted of a conventional resonance tube with a MEMS (microelectromechanical systems) microphone placed outside an openi...