Multigas Sensing Technique Based on Quartz Crystal Tuning Fork-Enhanced Laser Spectroscopy

doi:10.1021/acs.analchem.0c03233

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	Multigas Sensing Technique Based on Quartz Crystal Tuning Fork-Enhanced Laser Spectroscopy
	L. G. Xu,S. Zhou,N. W. Liu,M. H. Zhang,J. Q. Liang and J. S. Li
	2020
发表期刊	Analytical Chemistry
ISSN	0003-2700
卷号	92 期号:20 页码:14153-14163
摘要	A compact multigas sensor system based on a single quartz crystal tuning fork (QCTF) and multifrequency synchronous modulation strategy is proposed for trace gas detection. To demonstrate the novel detection technique, three near-infrared continuous-wave (CW) distributed feedback (DFB) diode lasers with center wavelengths of near 1391, 1574, and 1653 nm and a standard 32 kHz QCTF were integrated for simultaneous detection of H2O, CO2, and CH4, respectively. Wavelength modulation spectroscopy with second harmonic detection (WMS-2J) was selected for enhancing sensitivity. Design of the sensor configuration and primary performance between the traditional single-frequency modulation and the proposed tri-frequency modulation were experimentally investigated and compared in detail. The results indicate that the proposed sensing technique has significant advantages of cost effectiveness, portability, and ease-of-use, and detection limits of 1.4, 353, 3.1 ppm for simultaneously measuring H2O, CO2, and CH4, respectively, are obtained, corresponding to the normalized noise equivalent absorption (NNEA) coefficients of 2.65 x 10(-10), 8.09 x 10(-10), and 8.28 x 10(-10) cm(-1) W/root Hz, respectively. Moreover, the use of an erbium-doped fiber amplifier (EDFA) has been demonstrated as an effective method for sensitivity enhancement.
DOI	10.1021/acs.analchem.0c03233
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64707
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	L. G. Xu,S. Zhou,N. W. Liu,M. H. Zhang,J. Q. Liang and J. S. Li. Multigas Sensing Technique Based on Quartz Crystal Tuning Fork-Enhanced Laser Spectroscopy[J]. Analytical Chemistry,2020,92(20):14153-14163.
APA	L. G. Xu,S. Zhou,N. W. Liu,M. H. Zhang,J. Q. Liang and J. S. Li.(2020).Multigas Sensing Technique Based on Quartz Crystal Tuning Fork-Enhanced Laser Spectroscopy.Analytical Chemistry,92(20),14153-14163.
MLA	L. G. Xu,S. Zhou,N. W. Liu,M. H. Zhang,J. Q. Liang and J. S. Li."Multigas Sensing Technique Based on Quartz Crystal Tuning Fork-Enhanced Laser Spectroscopy".Analytical Chemistry 92.20(2020):14153-14163.

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