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In Situ High-Precision Measurement of Deep-Sea Dissolved Methane by Quartz-Enhanced Photoacoustic and Light-Induced Thermoelastic Spectroscopy

文献类型：期刊论文

作者Liu, Hao1,3; Chen, Xiang3; Hu, Mai2,3; Wang, Haoran4; Yao, Lu3; Xu, Zhenyu3; Ma, Guosheng3; Wang, Qiang4; Kan, Ruifeng3
刊名ANALYTICAL CHEMISTRY
出版日期2024-07-24
卷号96
ISSN号0003-2700
DOI10.1021/acs.analchem.4c02557
通讯作者Hu, Mai(maihu@cuhk.edu.hk) ; Kan, Ruifeng(kanruifeng@aiofm.ac.cn)
英文摘要Rapid and accurate realization of in situ analysis of deep-sea dissolved gases imperative to the study of ecological geology, oil and gas resource exploration, and global climate change. Herein, we report for the first time the deep-sea dissolved methane (CH4) in situ sensor based on quartz-enhanced photoacoustic and light-induced thermoelastic spectroscopy. The developed sensor system has a volume of phi 120 mm x 430 mm and a power consumption of 7.6 W. The sensor, in the manner of frequency division multiplexing, is able to simultaneously measure the photoacoustic signals and light-induced thermoelastic signals, which can accurately correct laser-intensity induced influence on concentration. The spectral response of CH4 concentration varying from 0.01 to 5% is calibrated in detail based on the pressure and temperature in the application environment. The trend of the photoacoustic signal of CH4 at different water molecule (H2O) concentrations is investigated. An Allan variance analysis of several hours demonstrates a minimum detection limit of 0.21 ppm for the CH4 spectrometer. The sensor combined with the gas-liquid separation and enrichment unit is integrated into a compact marine standalone system. Since the specifically designed photoacoustic cell has a volume of only 1.2 mL, the time response for dissolved CH4 detection is reduced to 4 min. Furthermore, the sensor is successfully deployed in the vicinity of the "HaiMa" cold seeps at 1380 m underwater in the South China Sea, completing three consecutive days of measurements of dissolved CH4.
WOS关键词TUNING-FORK ; COLD SEEP ; SENSOR ; OCEAN ; CO2 ; FLUX
资助项目National Key R&D Program of China[2023YFF0714700] ; Second Comprehensive Scientific Investigation of the Qinghai-Tibet Plateau[2019QZKK020802] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22020502] ; Youth Innovation Promotion Association[20222451]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:001277912000001
出版者AMER CHEMICAL SOC
资助机构National Key R&D Program of China ; Second Comprehensive Scientific Investigation of the Qinghai-Tibet Plateau ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Youth Innovation Promotion Association
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/137347]  
专题中国科学院合肥物质科学研究院
通讯作者Hu, Mai; Kan, Ruifeng
作者单位1.Univ Sci & Technol China, Hefei 230022, Peoples R China
2.Chinese Univ Hong Kong, Dept Mech & Automat Engn, Hong Kong 999077, Peoples R China
3.Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
4.Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Hao,Chen, Xiang,Hu, Mai,et al. In Situ High-Precision Measurement of Deep-Sea Dissolved Methane by Quartz-Enhanced Photoacoustic and Light-Induced Thermoelastic Spectroscopy[J]. ANALYTICAL CHEMISTRY,2024,96.
APA Liu, Hao.,Chen, Xiang.,Hu, Mai.,Wang, Haoran.,Yao, Lu.,...&Kan, Ruifeng.(2024).In Situ High-Precision Measurement of Deep-Sea Dissolved Methane by Quartz-Enhanced Photoacoustic and Light-Induced Thermoelastic Spectroscopy.ANALYTICAL CHEMISTRY,96.
MLA Liu, Hao,et al."In Situ High-Precision Measurement of Deep-Sea Dissolved Methane by Quartz-Enhanced Photoacoustic and Light-Induced Thermoelastic Spectroscopy".ANALYTICAL CHEMISTRY 96(2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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