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Design of High Precision Temperature and Pressure Closed-Loop Control System for Methane Carbon Isotope Ratio Measurement by Laser Absorption Spectroscopy

文献类型：期刊论文

作者Liu Xu1,3,4; Zhang Zhirong2,3,4,5; Sun Pengshuai4,5; Zhang Lewen3,4; Pang Tao4,5; Xia Hua4,5; Wu Bian4,5; Shu Zhifeng7; Shu Chimin6
刊名POLISH JOURNAL OF ENVIRONMENTAL STUDIES
出版日期2022
卷号31
ISSN号1230-1485
关键词tunable diode laser absorption spectroscopy (TDLAS) CH4 carbon isotope temperature and pressure closed-loop control Allan variance
DOI10.15244/pjoes/140290
通讯作者Zhang Zhirong(zhangzr@aiofm.ac.cn)
英文摘要In order to achieve the accurate measurement of gas stable isotope, according to the structure of gas cavity and the characteristics of optical elements, a constant temperature and pressure gas isotope measurement experimental system based on tunable diode laser absorption spectroscopy (TDLAS) technology is designed, which can achieve high-precision and stable control of temperature and pressure in the box. The hardware circuit system including high-precision constant-current source, two-channel temperature sampling module, conditioning circuit and pressure control circuit is designed in the system. The corresponding system closed-loop control software is developed to ensure the stability of the temperature and pressure of the optical cavity. Through the experimental verification, the temperature is controlled at 35 degrees C and the pressure is controlled at 150 mbar in the present work. The measurement results verified the stability of the temperature and pressure system, as follows: the optimal temperature fluctuation control is +/- 0.005 degrees C and the pressure stability is +/- 0.1 mbar. Then, in our experiment, the CH4 standard gas is introduced to measure carbon isotope ((CH4)-C-12 and (CH4)-C-13). The results clearly show that the control system is sufficiently stable to be used and the delta C-13 value can reach 0.52 parts per thousand according to the Allan variance.
WOS关键词GAS ; EMISSIONS ; BALANCE ; CH4 ; CO2
资助项目National Natural Science Foundation of China[11874364] ; National Natural Science Foundation of China[41877311] ; National Natural Science Foundation of China[42005107] ; National Natural Science Foundation of China[41773100] ; External Cooperation Program of Chinese Academy of Sciences[GJHZ1726] ; Key Research and development project of Anhui Province[201904c03020005] ; Key Research and development project of Anhui Province[1804a09020097] ; Major scientific and technological projects in Anhui Province[18030901054] ; Major projects of natural science research in Universities of Anhui Province[KJ2017ZD56] ; Support program for outstanding young talents in Colleges and universities of Anhui Province[gxyqZD2018072] ; Support program for outstanding young talents in Colleges and universities of Anhui Province[gxyq2020061] ; Foundation of President of Hefei Institutes of Physical Sciences, Chinese Academy of Sciences[YZJJ2020N8]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者HARD
WOS记录号WOS:000799779000040
资助机构National Natural Science Foundation of China ; External Cooperation Program of Chinese Academy of Sciences ; Key Research and development project of Anhui Province ; Major scientific and technological projects in Anhui Province ; Major projects of natural science research in Universities of Anhui Province ; Support program for outstanding young talents in Colleges and universities of Anhui Province ; Foundation of President of Hefei Institutes of Physical Sciences, Chinese Academy of Sciences
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/131037]  
专题中国科学院合肥物质科学研究院
通讯作者Zhang Zhirong
作者单位1.Bengbu Univ, Sch Elect & Elect Engn, Bengbu 233030, Peoples R China
2.Adv Laserer Tenonol Lab Anhui Prov, Hefei 230037, Peoples R China
3.Univ Sci & Technol China, Hefei 230026, Peoples R China
4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Anhui Prov Key Lab Photon Devices & Mat, Hefei 230031, Peoples R China
5.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
6.Yunlin Univ Sci & Technol, Dept Safety Hlth & Environm Engn, Yunlin 64002, Taiwan
7.Nanjing Univ Informat Sci & Technol, Sch Atmospher Phys, Ningliu Rd 219, Nanjing 210044, Peoples R China
推荐引用方式
GB/T 7714		 Liu Xu,Zhang Zhirong,Sun Pengshuai,et al. Design of High Precision Temperature and Pressure Closed-Loop Control System for Methane Carbon Isotope Ratio Measurement by Laser Absorption Spectroscopy[J]. POLISH JOURNAL OF ENVIRONMENTAL STUDIES,2022,31.
APA Liu Xu.,Zhang Zhirong.,Sun Pengshuai.,Zhang Lewen.,Pang Tao.,...&Shu Chimin.(2022).Design of High Precision Temperature and Pressure Closed-Loop Control System for Methane Carbon Isotope Ratio Measurement by Laser Absorption Spectroscopy.POLISH JOURNAL OF ENVIRONMENTAL STUDIES,31.
MLA Liu Xu,et al."Design of High Precision Temperature and Pressure Closed-Loop Control System for Methane Carbon Isotope Ratio Measurement by Laser Absorption Spectroscopy".POLISH JOURNAL OF ENVIRONMENTAL STUDIES 31(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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