A review of laser-spectroscopy-based gas sensing techniques for trace formaldehyde detection

被引：0
作者：
Yang, Xiu [1 ]
Chen, Baisong [2 ]
Liang, Yize [2 ]
Hou, Jiajia [2 ]
Zhang, Dacheng [2 ]
Li, Biao [3 ]
Sampaolo, Angelo [4 ,5 ,6 ]
Patimisco, Pietro [4 ,5 ,6 ]
Spagnolo, Vincenzo [4 ,5 ,6 ]
Yin, Xukun [1 ,2 ,7 ]
机构：
[1] Xidian Univ, Hangzhou Inst Technol, Hangzhou 311200, Peoples R China
[2] Xidian Univ, Sch Optoelect Engn, Xian 710071, Peoples R China
[3] Chongqing Univ Posts & Telecommun, Sch Optoelect Engn, Chongqing Key Lab Optoelect Informat Sensing & Tra, Chongqing 400065, Peoples R China
[4] Univ Bari, Dipartimento Interateneo Fis, PolySense Lab, I-70126 Bari, Italy
[5] Politecn Bari, I-70126 Bari, Italy
[6] PolySense Innovat srl, Via Amendola 173, I-70126 Bari, Italy
[7] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710071, Peoples R China
来源：
MEASUREMENT | 2025年 / 253卷
关键词：
Formaldehyde detection; Absorption spectroscopy; Trace gas sensors; ENHANCED PHOTOACOUSTIC-SPECTROSCOPY; INTERBAND CASCADE LASER; ABSORPTION-SPECTROSCOPY; DIODE-LASER; SENSITIVE DETECTION; NITROGEN-DIOXIDE; CAVITY; SENSOR; CHROMATOGRAPHY; WAVELENGTH;
D O I：
10.1016/j.measurement.2025.117656
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Formaldehyde (H2CO) is a colorless gas with a strong irritating odor, widely used in furniture manufacturing and house decoration. Already at concentration in the few ppm range, H2CO represents great harm to human health, therefore, accurate measurement of formaldehyde concentration is of great significance for human safety. In this review, the laser-based spectroscopic techniques for formaldehyde gas detection were investigated, such as cavity ring-down spectroscopy (CRDS), cavity-enhanced absorption spectroscopy (CEAS), integrated cavity output spectroscopy (ICOS), tunable diode laser absorption spectroscopy (TDLAS), multi-pass cell absorption spectroscopy (MC), differential optical absorption spectroscopy (DOAS), non-dispersive absorption spectroscopy (NDAS), and photoacoustic spectroscopy (PAS). Among these techniques, the lowest detection limit achieved with an infrared laser source resulted in 28 ppt with a signal integration time of 40 s, and 210 ppt with an integration time of 30 s when using an ultraviolet light source.
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页数：13
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