Development of an in situ analysis system for methane dissolved in seawater based on cavity ringdown spectroscopy

doi:10.1063/5.0004742

HFCAS OpenIR

	Development of an in situ analysis system for methane dissolved in seawater based on cavity ringdown spectroscopy
	Yuan, Feng 1,2; Hu, Mai 1,2; He, Yabai 1; Chen, Bing 1; Yao, Lu1 ; Xu, Zhenyu1 ; Kan, Ruifeng 1,3
	2020-08-01
发表期刊	REVIEW OF SCIENTIFIC INSTRUMENTS
ISSN	0034-6748
通讯作者	Kan, Ruifeng(kanruifeng@aiofm.ac.cn)
摘要	This paper reports the development of a compact in situ real-time concentration analysis system for methane dissolved in seawater by using a continuous-wave cavity ringdown spectroscopy (CRDS) technique. The miniaturized design of the system, including optical resonance cavity and control and data acquisition-analysis electronics, has a cylindrical dimension of 550 mm in length and 100 mm in diameter. Ringdown signal generation, data acquisition and storage, current driver, and temperature controller of the diode laser are all integrated in the miniaturized system circuits, with an electrical power consumption of less than 12 W. Fitting algorithms of the ringdown signal and spectral line are implemented in a digital signal processor, which is the main control chip of the system circuit. The detection sensitivity for methane concentration can reach 0.4 ppbv with an approximate averaging time of 240 s (or 4 min). Comparing the system's measurement of ambient air against a high-quality commercial CRDS instrument has demonstrated a good agreement in results. In addition, as a "proof of concept" for measuring dissolved methane, the developed instrument was tested in an actual underwater environment. The results showed the potential of this miniaturized portable instrument for in situ gas sensing applications.
DOI	10.1063/5.0004742
关键词[WOS]	CARBON-DIOXIDE ; VOIGT FUNCTION ; APPROXIMATION ; HYDRATE ; SENSORS ; WATER
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2016YFC0302302] ; National Natural Science Foundation of China[61805286]
项目资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China
WOS研究方向	Instruments & Instrumentation ; Physics
WOS类目	Instruments & Instrumentation ; Physics, Applied
WOS记录号	WOS:000563496600001
出版者	AMER INST PHYSICS
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/43123
专题	中国科学院合肥物质科学研究院
通讯作者	Kan, Ruifeng
作者单位	1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Appl Opt, Changchun 130033, Peoples R China
第一作者单位	中科院安徽光学精密机械研究所
通讯作者单位	中科院安徽光学精密机械研究所
推荐引用方式 GB/T 7714	Yuan, Feng,Hu, Mai,He, Yabai,et al. Development of an in situ analysis system for methane dissolved in seawater based on cavity ringdown spectroscopy[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2020,91.
APA	Yuan, Feng.,Hu, Mai.,He, Yabai.,Chen, Bing.,Yao, Lu.,...&Kan, Ruifeng.(2020).Development of an in situ analysis system for methane dissolved in seawater based on cavity ringdown spectroscopy.REVIEW OF SCIENTIFIC INSTRUMENTS,91.
MLA	Yuan, Feng,et al."Development of an in situ analysis system for methane dissolved in seawater based on cavity ringdown spectroscopy".REVIEW OF SCIENTIFIC INSTRUMENTS 91(2020).