Ppb-Level Ammonia Sensor for Exhaled Breath Diagnosis Based on UV-DOAS Combined with Spectral Reconstruction Fitting Neural Network
Rui Zhu,
Qiwen Zhou,
Qi Tian
et al.
Abstract:Ammonia (NH 3 ) in exhaled breath (EB) has been a biomarker for kidney function, and accurate measurement of NH 3 is essential for early screening of kidney disease. In this work, we report an optical sensor that combines ultraviolet differential optical absorption spectroscopy (UV-DOAS) and spectral reconstruction fitting neural network (SRFNN) for detecting NH 3 in EB. UV-DOAS is introduced to eliminate interference from slow change absorption in the EB spectrum while spectral reconstruction fitting is propo… Show more
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