Author(s): Li, GL (Li, Guolin); Wu, YH (Wu, Yunhui); Zhang, ZC (Zhang, Zecheng); Zhang, XA (Zhang, Xuena); Ma, K (Ma, Kun); Jiao, Y (Jiao, Yue); Li, JR (Li, Jiarui); Liu, YJ (Liu, Yajing); Song, YM (Song, Yimeng); Zhao, H (Zhao, Hao); Zhai, SQ (Zhai, Shenqiang); Li, Q (Li, Qiang)

Source: OPTICS AND LASERS IN ENGINEERING Volume: 159 Article Number: 107222 DOI: 10.1016/j.optlaseng.2022.107222 Published: DEC 2022

Abstract: A highly sensitive mid-infrared dual-range real-time trace sensor was developed for ethane detection in exhaled breath, in which a continuous-wave (CW) mode interband cascade laser (ICL) emitting at 3348.2 nm and a multi -pass gas cell (MPGC) with an effective optical absorption length of 76.3 m were adopted in the trace sensor. The ethane concentration in the exhaled breath was measured by scanning the ethane absorption lines at 2986.7 cm(-1) and 2988.2 cm(-1) using wavelength modulation spectroscopy (WMS) techniques of tunable diode laser absorption spectroscopy (TDLAS), which allows for highly sensitive detection in two ethane concentration ranges. The Allan deviation indicated the limit of detection (LoD) of the sensor system can be averaged up to similar to 269 ppt over the entire integration time.

Accession Number: WOS:000877357600005

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Li, Guolin                  0000-0001-9934-4230

ISSN: 0143-8166

eISSN: 1873-0302

Full Text: https://www.sciencedirect.com/science/article/pii/S0143816622002755?via%3Dihub