On-line detection of carbon dioxide in large scale offshore by laser technology

被引：0
|
作者：
Li M.-X. [1 ,2 ]
Chen B. [1 ]
Ruan J. [1 ]
Li X. [2 ]
Liu Y. [1 ,2 ]
Xu Z.-Y. [1 ]
He Y.-B. [1 ]
Kan R.-F. [3 ]
机构：
[1] Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Sciences, Chinese Academy of Sciences, Hefei
[2] University of Science and Technology of China, Hefei
[3] Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun
来源：
Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2020年 / 28卷 / 07期
关键词：
Derivative absorption spectrum; Direct absorption spectrum; Laser spectroscopy; Openpath; Tunable laser diode;
D O I：
10.37188/OPE.20202807.1424
中图分类号：
学科分类号：
摘要：
Quantitative research on energy and material exchange between the land or ocean and the atmosphere, especially the monitoring of carbon dioxide (CO2) exchange flux, play an important role in the study of global carbon cycle and climate change.We developed an open-path CO2 detection system based on direct absorption spectroscopy technology and derivative spectroscopy technology for on-line measurement across an order of km air path. A movable platform was developed capable of detecting atmospheric variations of CO2 in real time with the integrated optical system of transceiver.Allan variance analysis shows the detection limit of the system is 0.08×10-6 at the integration time of 100 s.The feasibility of the method with the second derivative spectrum is verified by using standard gases with different concentrations for the concentration calibration, and the correlation is 0.998. The continuous operation was carried out at Shenzhen Eco-environment Monitoring Station for 1 month, and the detection results have obvious daily variation periodicity.Comparing the data with the Licor7550-CO2 monitor installed at different points nearby, the data change trend is consistent, and the stabilityof the prototype is better. © 2020, Science Press. All right reserved.
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页码：1424 / 1432
页数：8
相关论文
共 16 条
  • [1] LU ZH M, DAI M H., Advances in air-sea CO<sub>2</sub> flux study and the application of eddy covariance technique [J], Advances in Earth Science, 10, pp. 1046-1057, (2006)
  • [2] LIU Q, GUO X H, YIN ZH Q, Et al., Carbon fluxes in the China seas: An overview and perspective, Science China: Earth Sciences, 48, 11, pp. 1564-1582, (2018)
  • [3] HINKLEY E D., High-resolution infrared spectroscopy with a tunable diode laser, Applied Physics Letters, 16, 9, pp. 351-354, (1970)
  • [4] REID J, SHEWCHUN J, GARSIDE B K, Et al., High sensitivity pollution detection employing tunable diode lasers, Applied Optics, 17, 2, pp. 300-307, (1978)
  • [5] ZHANG ZH R, SUN P SH, PANG T, Et al., Application of laser absorption spectroscopy for identification gases in industrial production processes and early safety warning, Opt. Precision Eng, 26, 8, pp. 1925-1937, (2018)
  • [6] NIE W, XU ZH Y, KAN R F, Et al., Measurement of low water vapor dew-point temperature based on tunable diode laser absorption spectroscopy, Opt. Precision Eng, 26, 8, pp. 1862-1869, (2018)
  • [7] JIA L Q, QI H N, HU W J, Et al., CO<sub>2</sub> concentration detection system for seed respiration, Optics and Precision Engineering, 27, 6, pp. 1397-1404, (2019)
  • [8] HE Y, ZHANG Y J, WANG L M, Et al., Lasertechnology for CO<sub>2</sub> and H<sub>2</sub>O on-line detection in large-scale region [J], Chinese Journal of Lasers, pp. 233-237, (2014)
  • [9] HE Y, ZHANG Y J, LIU J G, Et al., Open-path in situ CO<sub>2</sub> monitoring in cropland based on laser techniques [J], Journal of Atmospheric and Environmental Optics, 5, 6, pp. 431-437, (2010)
  • [10] YAO L, LIU W Q, LIU J G, Et al., Research on open-path detection for atmospheric trace gas CO based on TDLAS, Chinese Journal of Lasers, 42, 2, (2015)
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