Xi'an Chang'an two hundred ten National Road
Xian
China
Xidian University
Photoacoustic spectroscopy, Adsorbent enhanced method, Exhaled gas analysis, Multiple simultaneous detection, Resonance frequency tracking
photoacoustic spectroscopy; resonance frequency tracking; all-optical; full-range; time division multiplexing
Multiple gas monitoring, greenhouse, in-situ detection, photoacoustic spectroscopy, wavelength modulation, kinetic relaxation effect