Calibration-free mid-infrared exhaled breath sensor based on BF-QEPAS for real-time ammonia measurements at ppb level
Biao Li, Chaofan Feng, Hongpeng Wu, Suotang Jia, Lei Dong
Topics & Concepts
Breath gas analysisQuantum cascade laserCalibrationDetection limitMaterials scienceOptoelectronicsChemistryOpticsChromatographyPhysicsTerahertz radiationQuantum mechanicsSpectroscopy and Laser ApplicationsGas Sensing Nanomaterials and SensorsAdvanced Chemical Sensor Technologies