An Open-Path Optical Sensor for Hydrogen Sulfide and Methane Detection by QCL

被引：0

作者：

Li, Jun ^{[1
,2
]}

Fan, Binbin ^{[1
,2
]}

Jaworski, Piotr ^{[3
]}

Zeng, Qingjie ^{[1
,2
]}

Zhang, Jiarui ^{[1
,2
]}

Ma, Tian ^{[1
,2
]}

Zhai, Xiaowei ^{[1
,2
]}

Hao, Le ^{[1
,2
]}

Luan, Guohua ^{[4
]}

Wang, Zhen ^{[5
]}

机构：

[1] Xian Univ Sci & Technol, Sch Safety Sci & Engn, Xian 710054, Peoples R China

[2] Shaanxi Prov Key Lab Coal Fire Disaster Prevent, Xian 710054, Peoples R China

[3] Wroclaw Univ Sci & Technol, Laser & Fiber Elect Grp, Fac Elect, PL-50370 Wroclaw, Poland

[4] China Petr Res Inst Safety & Environm Technol, Beijing 100085, Peoples R China

[5] SINOPEC Res Inst Safety Engn Co Ltd, State Key Lab Chem Safety, Qingdao 266000, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2025年 / 25卷 / 05期

关键词：

Quantum cascade lasers; Gases; Absorption; Gas lasers; Spectroscopy; Sensor systems; Interference; Hydrogen sulfide (H2S); mid-infrared (MIR); multicomponent gases; quantum cascade laser (QCL); H2S;

D O I：

10.1109/JSEN.2024.3402443

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this article, a quantum cascade laser (QCL) with a center wavelength of 8.309 mu m based on wavelength modulation spectroscopy (WMS) is proposed to measure the mixture of hydrogen sulfide (H2S) and methane (CH4) gases with a sensing distance of 30-50 m. The impact of different sensing distances at 15, 30, and 50 m on the detection signal was analyzed. Allan variance calculations demonstrate that the lower detection limits for H2S and CH4 were 0.593 and 1.160 ppb with integration times of 183 and 142 s, respectively. The results provide an effective method for remote measurement of highly sensitive H2S and CH4 multicomponent gases and ensure safe operation in a variety of industrial environments.

引用

页码：7830 / 7837

页数：8

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