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Near Infrared Photoacoustic Spectrum Detection Technology of H2S and CO
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Xiaoxing ZHANG1, 2, Zhenwei CHEN1, Hongtu CHENG1, Yin ZHANG2, Ju TANG1, Song XIAO1
Insulating Materials | 2021, 54(4) : 95 - 101
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Insulating Materials | 2021, 54(4): 95-101
• Test and Analysis •
Near Infrared Photoacoustic Spectrum Detection Technology of H2S and CO
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Xiaoxing ZHANG1, 2, Zhenwei CHEN1, Hongtu CHENG1, Yin ZHANG2, Ju TANG1, Song XIAO1
Affiliations
  • 1School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
  • 2School of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan 430068, China
Published: 2021-04-20 doi: 10.16790/j.cnki.1009-9239.im.2021.04.016
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SF6 is often used in GIE as an insulating medium, it will decompose when overheating or appearing partial discharge inside GIE, the decomposition products, such as SO2, SOF2, SO2F2, H2S, and CO will produce after further reaction. In this paper, the components H2S and CO were quantitatively measured by photoacoustic spectroscopy detection technology, and the factors affecting photoacoustic signal were discussed theoretically. A photoacoustic spectrum experiment platform was built, and the gas was measured quantitatively based on the photoacoustic effect. Appropriate gas absorption lines were chosen as characteristic spectrum line to avoid the potential cross-interference of other gas components. According to the results of HITRAN simulation, the characteristic spectrum line of H2S was chosen as 6 336.6 cm-1, and the characteristic spectrum line of CO was chosen as 6 380.3 cm-1. The results show that the linearity between the gas concentration of CO and H2S and the amplitude of pure photoacoustic signal is extremely high, which suggests that the gas concentration can be accurately calculated through the measurement of photoacoustic signal value of gas. With the background gas of SF6, the lower limit of detection for CO is 9.88×10-6, and the lower limit of detection for H2S is 1.75×10-6.

near infrared absorption of gas  /  photoacoustic spectrum  /  trace gas detection  /  SF6 decomposition components
Xiaoxing ZHANG, Zhenwei CHEN, Hongtu CHENG, Yin ZHANG, Ju TANG, Song XIAO. Near Infrared Photoacoustic Spectrum Detection Technology of H2S and CO[J]. Insulating Materials, 2021 , 54 (4) : 95 -101 . DOI: 10.16790/j.cnki.1009-9239.im.2021.04.016
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2021.04.016
  • Receive Date：2020-07-03
  • Online Date：2026-01-26
  • Published：2021-04-20
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  • Received：2020-07-03
  • Revised：2020-08-12
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Affiliations
    1School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
    2School of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan 430068, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2021.04.016
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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