High-Precision Synchronous Detection of Breath CO, CH <sub>4</sub> , and CO <sub>2</sub> Using an NIR-WMS Sensor Based on a Dual-Channel Multipass Cell
, as determined by Allan deviation analysis. The system was successfully deployed in breath testing, effectively distinguishing end-tidal CO levels between smokers and nonsmokers, with concentration trends consistent with those in the established literature. This work validates a reliable and practical TDLAS sensor for real-time, multicomponent breath analysis, offering a viable pathway toward noninvasive, high-sensitivity diagnostic devices.
Authors
- Zhaoyue Huang (ORCID: https://orcid.org/0000-0002-8553-6941)
- Hongyan Dong (ORCID: https://orcid.org/0000-0003-0275-8125)
- Xue Ou
- Yiyun Gai
- Guotao Zhang
- Peng Liu
Institutions
- Beijing Normal University (CN)
- Beijing Academy of Quantum Information Sciences (CN)
Publication Details
- Journal
- Analytical Chemistry
- Published
- 2026-04-02
- DOI
- https://doi.org/10.1021/acs.analchem.5c08129
- Primary Topic
- Spectroscopy and Laser Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00