Title :
Atmospheric detection and discrimination of NO and NO/sub 2/ by laser spectroscopy
Author :
Sausa, R.C. ; Pastel, R.L.
Author_Institution :
AMSRL-WT-PC, US Army Res. Lab., Aberdeen Proving Ground, MD, USA
Abstract :
Summary form only given. There is a growing interest in laser-based analytical techniques for remote or in situ trace detection of NO/sub x/ (NO+NO/sub 2/) pollutants. In the present study, we employ a single 454-nm laser to detect trace NO and NO/sub 2/ concentrations at atmospheric pressure. NO is detected using miniature electrodes by (2+2) resonance-enhanced multiphoton (REMPI) processes, while NO/sub 2/ is detected using a miniature microphone by photoacoustic spectroscopy.
Keywords :
air pollution measurement; multiphoton processes; nitrogen compounds; photoacoustic spectroscopy; photoionisation; spectrochemical analysis; spectroscopy; 454 nm; NO; NO/sub 2/; analytical technique; atmospheric pressure; laser spectroscopy; photoacoustic spectroscopy; pollutant; resonance-enhanced multiphoton ionisation; trace detection; Chemical analysis; Chemical lasers; Electromagnetic wave absorption; Laser noise; Laser transitions; Optical materials; Pollution measurement; Potential energy; Public healthcare; Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics, 1996. CLEO '96., Summaries of papers presented at the Conference on
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-443-2
