Study on Photo-Acoustic Spectrum Detection Technology of Respiratory Dust Absorption Coefficient
作者: JIN Hua-weiXIE Pin-huaHU Ren-zhiLIU Wen-qingLI Zhi-yanCHEN HaoHUANG Chong-chong
作者单位: 11. Key Laboratory of Environmental Optics & Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China2. University of Science and Technology of China, Hefei 230026, China3. School of Mechanical Engineering, Anhui University of Science and Technology, Huainan 232001, China
刊名: 光谱学与光谱分析, 2019, Vol.39 (07), pp.1993-1998
来源数据库: PubMed Journal
DOI: 10.3964/j.issn.1000-0593(2019)07-1993-06
关键词: Photo-acoustic spectroscopyRespirable dustAbsorption coefficientLong path differential optical absorption spectroscopy
中文关键词: 光声光谱呼吸性粉尘吸收系数长光程差分吸收光谱
中文摘要: ...
原始语种摘要: In this paper, combined with the continuous, reliable and low-cost real-time detection requirements of respiratory dust concentration, a spectral application technology innovation is realized, and the detection system with respiratory dust based on photo-acoustic spectroscopy is proposed. The center wavelength of the spectrum of the low-power diode laser is 403.56 nm and the corresponding effective absorption cross-section of NO2 is 5.948 5×10-19 cm2·mole-1. In addition, the resonance frequency of 1.35 kHz was obtained by using frequency scanning fitting. The influence analysis of photo-acoustic cell structure is carried out. The conclusion is drawn that the length parameter of the photo-acoustic cell has little influence on the background noise but great influence on the laser...
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  • absorption 吸收
  • coefficient 系数
  • parameters 参数
  • influence 影响
  • diameter 直径
  • different 不相同的
  • acoustic 声的
  • concentration 浓度
  • respirable 能呼吸的
  • noise 噪声