A Fiber-Integrated CRDS Sensor for In-Situ Measurement of Dissolved Carbon Dioxide in Seawater

doi:10.3390/s21196436

	A Fiber-Integrated CRDS Sensor for In-Situ Measurement of Dissolved Carbon Dioxide in Seawater
	Hu, Mai 1,2; Chen, Bing 1; Yao, Lu 1; Yang, Chenguang 3; Chen, Xiang 1; Kan, Ruifeng 1
刊名	SENSORS
	2021-10-01
卷号	21
关键词	seawater dissolved gas carbon dioxide optical cavity ring-down spectroscopy in-situ measurement
DOI	10.3390/s21196436
通讯作者	Kan, Ruifeng(kanruifeng@aiofm.ac.cn)
英文摘要	Research on carbon dioxide (CO2) geological and biogeochemical cycles in the ocean is important to support the geoscience study. Continuous in-situ measurement of dissolved CO2 is critically needed. However, the time and spatial resolution are being restricted due to the challenges of very high submarine pressure and quite low efficiency in water-gas separation, which, therefore, are emerging the main barriers to deep sea investigation. We develop a fiber-integrated sensor based on cavity ring-down spectroscopy for in-situ CO2 measurement. Furthermore, a fast concentration retrieval model using exponential fit is proposed at non-equilibrium condition. The in-situ dissolved CO2 measurement achieves 10 times faster than conventional methods, where an equilibrium condition is needed. As a proof of principle, near-coast in-situ CO2 measurement was implemented in Sanya City, Haina, China, obtaining an effective dissolved CO2 concentration of similar to 950 ppm. The experimental results prove the feasibly for fast dissolved gas measurement, which would benefit the ocean investigation with more detailed scientific data.
资助项目	Scientific Instrument Developing Project of the Chinese Academy of Sciences[YJKYYQ20190037] ; Second Comprehensive Scientific Investigation of the Qinghai-Tibet Plateau[2019QZKK020802] ; National Key Research and Development Project[2019YFB2006003] ; National Natural Science Foundation of China[61805286]
WOS关键词	RING-DOWN SPECTROSCOPY ; CAVITY ; FLUXES ; PCO(2) ; SEA
WOS研究方向	Chemistry ; Engineering ; Instruments & Instrumentation
语种	英语
出版者	MDPI
WOS记录号	WOS:000757299300013
资助机构	Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Second Comprehensive Scientific Investigation of the Qinghai-Tibet Plateau ; National Key Research and Development Project ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/127563]
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, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572022, Peoples R China
推荐引用方式 GB/T 7714	Hu, Mai,Chen, Bing,Yao, Lu,et al. A Fiber-Integrated CRDS Sensor for In-Situ Measurement of Dissolved Carbon Dioxide in Seawater[J]. SENSORS,2021,21.
APA	Hu, Mai,Chen, Bing,Yao, Lu,Yang, Chenguang,Chen, Xiang,&Kan, Ruifeng.(2021).A Fiber-Integrated CRDS Sensor for In-Situ Measurement of Dissolved Carbon Dioxide in Seawater.SENSORS,21.
MLA	Hu, Mai,et al."A Fiber-Integrated CRDS Sensor for In-Situ Measurement of Dissolved Carbon Dioxide in Seawater".SENSORS 21(2021).