{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,26]],"date-time":"2026-04-26T01:54:50Z","timestamp":1777168490430,"version":"3.51.4"},"reference-count":33,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2016,1,27]],"date-time":"2016-01-27T00:00:00Z","timestamp":1453852800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the 973 program","award":["2012CB921603"],"award-info":[{"award-number":["2012CB921603"]}]},{"DOI":"10.13039\/501100001809","name":"the National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["61575113, 61275213, 61108030, 61475093, 61127017, 61178009, 61378047 and 61205216"],"award-info":[{"award-number":["61575113, 61275213, 61108030, 61475093, 61127017, 61178009, 61378047 and 61205216"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"National Key Laboratory Project","award":["IOSKL2015KF25"],"award-info":[{"award-number":["IOSKL2015KF25"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A near-IR CO trace gas sensor based on quartz-enhanced photoacoustic spectroscopy (QEPAS) is evaluated using humidified nitrogen samples. Relaxation processes in the CO-N2-H2O system are investigated. A simple kinetic model is used to predict the sensor performance at different gas pressures. The results show that CO has a ~3 and ~5 times slower relaxation time constant than CH4 and HCN, respectively, under dry conditions. However, with the presence of water, its relaxation time constant can be improved by three orders of magnitude. The experimentally determined normalized detection sensitivity for CO in humid gas is                                                         1.556                 \u00d7                                                         10                                                           \u2212                     8                                                                       W                 \u22c5                                                         cm                                                           \u2212                     1                                                     \/                                                         Hz                                                           1                     \/                     2                                                                                    .<\/jats:p>","DOI":"10.3390\/s16020162","type":"journal-article","created":{"date-parts":[[2016,1,28]],"date-time":"2016-01-28T02:19:45Z","timestamp":1453947585000},"page":"162","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":57,"title":["Impact of Humidity on Quartz-Enhanced Photoacoustic Spectroscopy Based CO Detection Using a Near-IR Telecommunication Diode Laser"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4840-9529","authenticated-orcid":false,"given":"Xukun","family":"Yin","sequence":"first","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"},{"name":"State Key Laboratory on Integrated Optoelectronics, Jilin University, Changchun 130012, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7379-3388","authenticated-orcid":false,"given":"Lei","family":"Dong","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}]},{"given":"Huadan","family":"Zheng","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}]},{"given":"Xiaoli","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}]},{"given":"Hongpeng","family":"Wu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}]},{"given":"Yanfang","family":"Yang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}]},{"given":"Weiguang","family":"Ma","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}]},{"given":"Lei","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}]},{"given":"Wangbao","family":"Yin","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}]},{"given":"Liantuan","family":"Xiao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}]},{"given":"Suotang","family":"Jia","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China"},{"name":"Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China"}]}],"member":"1968","published-online":{"date-parts":[[2016,1,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1902","DOI":"10.1364\/OL.27.001902","article-title":"Quartz-enhanced photoacoustic spectroscopy","volume":"27","author":"Kosterev","year":"2002","journal-title":"Opt. 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