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FTIR和光谱差减法的大气质量检测

Air Quality Detecting Based on FTIR and Spectrum Substraction
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摘要 针对大气质量检测的多组分定量分析,本文提出利用傅里叶变换红外光谱(FTIR)技术与光谱差减相结合的气体定量方法。该方法是根据迈克尔逊干涉原理与朗伯-比尔定律,采用怀特型长光程气体池与FTIR光谱仪相结合的方式来测得痕量气体的红外光谱,最后利用光谱差减法反演出气体浓度。为了避免背景环境的干扰(主要是避免水和CO2吸收峰的干扰),选择了在某些特殊波段内的待测气体吸收峰进行分析。本文分别对CO,SO2,NO2,NO和CO2气体进行了定量分析,相应的最佳观测波段依次为:2250~2020cm-1,1230~1070cm-1,2940~2840cm-1,1965~1775cm-1,668.24cm-1。实验结果表明,经浓度反演相对误差可达到10%以内。 To realize multi-component analysis of air quality detecting, an gas quantitative method combining technique of Fourier Transform Infrared (FTIR) spectroscopy and the method of spectrum subtraction was applied. Based on Michelson micro-interference principle and Lambert-Beer law, FTIR spectrometer coupled with long path White gas cell was used to measure the infrared spectrums of the trace gases, and then, the values of gas concentration was deduced by the method of spectrum subtraction. Furthermore, for the gases to be detected, the regions were chosen carefully to provide optimum detection of the compounds interested with minimum interference by other compounds (especially, vapor and CO2). The optimal window for CO, SO2, NO2 , NO and CO2 would be the regions at 2250-2020 cm^-1, 1230-1070 cm^-1, 2 940-2 840 cm^-1, 1 965-1 775 cm^-1, and around 668.24 cm^-1 respectively. The quantitative analysis for CO, SO2, NO2, NO and CO2 of different concentrations was carried out in this way. Results indicate that the values of relative errors are below 10%.
出处 《光电工程》 CAS CSCD 北大核心 2008年第11期73-76,81,共5页 Opto-Electronic Engineering
关键词 大气污染物 傅里叶变换红外光谱 长光程池 浓度光程积 光谱差减 air pollutants Fourier transform infrared spectroscopy long path cell concentration-path length product spectrum subtraction
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参考文献11

  • 1乔冬平.浅谈傅立叶变换红外光谱技术与应用[J].材料开发与应用,1999,14(1):44-46. 被引量:13
  • 2Michael Heise H, Uwe Muller, Andrea G Gartrer, et al. Improved Chemometric Strategies for Quantitative FTIR [J]. Field Analytical Chemistry and Technology, 2001, 5(1): 13-28.
  • 3Jimmy Bak, Sonnik Clausen. FTIR emission spectroscopy methods and procedures for real time quantitative gas analysis in industrial environments [J]. Measurement Science and Technology, 2002, 13: 150-156.
  • 4Linda Ingling, Thomas L Isenhour. Spectral Matching Quantitative Open-Path Fourier-Transform Infrared Spectroscopy [J]. Field Analytical Chemistry and Technology, 1999, 3(1): 37-43.
  • 5David W T Griffith. Synthetic Calibration and Quantitative Analysis of Gas-Phase FT-IR Spectra [J]. Applied Spectroscopy, 1996, 50(1): 59-70.
  • 6Shou Nan Li, Chin Ta Chang, Hui Ya Shih. Using an Extractive Fourier Transform Infrared Spectrometer for Improving Cleanroom Air Quality in a Semiconductor Manufacturing Plant [J]. AIHA Journal, 2003, 64: 408-414.
  • 7Russell E Warren. Detection and discrimination using multiple-wavelength differential absorption lidar [J]. Applied Optical, 1985, 24(21): 3541-3545.
  • 8Semen M Chernin. Promising Version of the three-objective multipass matrix system [JJ. Optics Express, 2002, 10(2): 104-107.
  • 9王乃岩,毕卫东,许国旺,甘进平,张玉奎,卢佩章.用傅里叶变换红外光谱差减技术自动监测大气毒物的软件及应用[J].分析化学,1995,23(11):1329-1332. 被引量:4
  • 10杭国培,程听大,赵学红.红外光谱差谱技术在高分子材料鉴定中的应用[J].合肥工业大学学报(自然科学版),1996,19(2):138-141. 被引量:6

二级参考文献6

  • 1林水 吴平平 等.实用傅立叶变换红外光谱学[M].北京:中国环境科学出版社,1991..
  • 2许禄,计算机化学方法及应用,1990年
  • 3团体著者,空气和废气监测分析方法,1990年
  • 4胡鑫尧,计算机在分析化学中的应用,1982年
  • 5许国旺,分析测试学报
  • 6毕卫东,分析化学

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