Detection of nitrous oxide by resonant photoacoustic spectroscopy based on mid infrared quantum cascade laser

doi:10.7498/aps.67.20172696

	Detection of nitrous oxide by resonant photoacoustic spectroscopy based on mid infrared quantum cascade laser
	Zhou Yu 1,2; Cao Yuan 1,2; Zhu Gong-Dong 1; Liu Kun 1; Tan Tu 1; Wang Li-Jun 3; Gao Xiao-Ming 1
刊名	ACTA PHYSICA SINICA
	2018-04-20
卷号	67 期号:8 页码:7
关键词	photoacoustic spectroscopy quantum cascade laser nitrous oxide trace gas detection
ISSN号	1000-3290
DOI	10.7498/aps.67.20172696
通讯作者	Liu Kun(liukun@aiofm.ac.cn) ; Gao Xiao-Ming(xmgao@aiofm.ac.cn)
英文摘要	Atmospheric greenhouse gases have great influence on the climate forcing, which is important to human being and also for natural systems. Nitrous oxide (N2O), such as carbon dioxide and methane, is an important greenhouse gas. It plays an important role in the atmospheric environment. Therefore, sensitive measurement of N2O concentration is of significance for studying the atmospheric environment. In this paper, a photoacoustic spectroscopy (PAS) system based on 7.6 mu m mid infrared quantum cascade laser combined with resonant PAS technique is established for the sensitive detection of N2O concentration. The PAS has been regarded as a highly sensitive and selective technique to measure trace gases. Compared with laser absorption spectroscopy, the PAS offers several intrinsic attractive features including ultra-compact size and no cross-response of light scattering. In addition, the signal of PAS is recorded with low-cost wavelength-independent acoustic transducer. The performance of the developed system is optimized and improved based on the traditional photoacoustic spectroscopic detection. Dual beam enhancement method is used to increase the effective optical power which effectively improves the detection sensitivity of the system. The N2O absorption line at 1307.66 cm(-1) is chosen as the target line, and an operation pressure of 50 kPa is selected for reducing cross-talking from H2O absorption line. By detecting the photoacoustic signals of a certain concentration of N2O at different modulation frequencies and modulation amplitudes, the optimal modulation frequency and modulation amplitude of the system are determined to be 800 Hz and 90 mV, respectively. Different concentrations of N2O gas are detected under the optimized parameters, and calibration curve of the system, that is, the curve of photoacoustic signal versus concentration of N2O is obtained, which shows good linearity. The experimental results show that the minimum detection limit of the system is 150 ppb at a pressure of 50 kPa with an integration time of 30 ms. The system noise can be further reduced by increasing the averaging time. A minimum detection limit of 37 ppb is achieved by averaging signals 100 times, and the signal of N2O in the atmosphere is obtained.
资助项目	National Key Research and Development Program, China[2017YFC0209700] ; National Natural Science Foundation of China[41730103] ; National Natural Science Foundation of China[41475023] ; National Natural Science Foundation of China[41575030] ; National Natural Science Foundation of China[61734006]
WOS关键词	METHANE ; GASES
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000443194600010
资助机构	National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Key Research and Development Program, China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/37924]
专题	中国科学院合肥物质科学研究院
通讯作者	Liu Kun; Gao Xiao-Ming
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Anhui Inst Opt & Fine Mech, Hefei 230031, Anhui, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Zhou Yu,Cao Yuan,Zhu Gong-Dong,et al. Detection of nitrous oxide by resonant photoacoustic spectroscopy based on mid infrared quantum cascade laser[J]. ACTA PHYSICA SINICA,2018,67(8):7.
APA	Zhou Yu.,Cao Yuan.,Zhu Gong-Dong.,Liu Kun.,Tan Tu.,...&Gao Xiao-Ming.(2018).Detection of nitrous oxide by resonant photoacoustic spectroscopy based on mid infrared quantum cascade laser.ACTA PHYSICA SINICA,67(8),7.
MLA	Zhou Yu,et al."Detection of nitrous oxide by resonant photoacoustic spectroscopy based on mid infrared quantum cascade laser".ACTA PHYSICA SINICA 67.8(2018):7.