Chinese Journal of Quantum Electronics ›› 2021, Vol. 38 ›› Issue (6): 699-726.doi: 10.3969/j.issn.1007-5461.2021.06.001

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Research progress of atmospheric HCHO spectroscopy detection technology

WU Tao 1,2 , HU Renzhi 1∗ , XIE Pinhua 1,2,3,4∗ , WANG Jiawei 1,2 , LIU Wenqing 1,2,3,4   

  1. 1 Key Laboratory of Environment Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China; 2 University of Science and Technology of China, Hefei 230026, China; 3 Center for Excellence and Innovation in Regional Atmospheric Environment Research, Chinese Academy of Sciences, Xiamen 361000, China; 4 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2021-07-02 Revised:2021-08-15 Published:2021-11-28 Online:2021-11-28

Abstract: Formaldehyde (HCHO) is an important indicator of atmospheric reactivity and one of the main precursors of urban atmospheric aerosols, which controls the oxidation capacity in the troposphere. In addition, as a toxic gas, excessive HCHO will cause great harm to human health. Therefore, it is of great significance to realize the trace detection of HCHO. The research progress of trace detection of HCHO at home and abroad is reviewed, and the detection methods of HCHO, especially the spectroscopic detection methods, are introduced in detail from the detection principle, detection spectral line and the application of light source. In addition, several typical HCHO calibration devices are compared, and different trace HCHO detection technologies are analyzed and summarized from detection sensitivity, response, selectivity, cost, integration and so on. Finally, the applications of different detection technologies in field measurement are also introduced.

Key words: spectroscopy, HCHO trace detection, spectroscopy detection technology, absorption line; light source, calibration device

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