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介绍了在傅里叶变换红外光谱(FTIR)技术基础上发展起来的一种监测污染源有害气体排放率的新方法——红外掩日通量(solar occultation flux, SOF)法.在理论上建立了太阳辐射两层传输模型,根据比尔定律阐述了计算污染物透过率的方法.详细介绍了如何从HITRAN,NIST和QAsoft三种红外数据库中提取气体标准吸收截面.介绍了基于Levenberg-Marquardt非线性最小二乘法反演污染气体柱浓度的算法和污染源气体排放率计算算法.介绍了整套装置的组成部分和太阳跟踪装置的结构.对合肥某一化肥厂的氨气排放进行了测量,从实验结果可以看出,测量的柱浓度分布准确地反应了污染物排放和扩散情况,证明了污染源排放气体浓度时空分布反演算法的正确性.Method of solar occultation flux infrared spectroscopy to detect the pollution emission flux of sources is presented in detail. It is developed based on the FTIR technique. A Two-layer radiative transfer model is established theoretically. Algorithm of transmissivity calculation of pollution gas is expatiated. The method to obtain the absorption coefficient of molecules from HITRAN, NIST and QAsoft databases is mentioned. Levenberg-Marquardt algorithm is used to calculate column concentration of pollution gas from pollution source. The distribution of column concentration is drawn by software developed by our group. The total system and the sun tracker are shown in the paper. The distribution of column concentration of NH3 is measured in a chemical plant in Hefei China. The calculated distribution of column concentration of NH3 is consistent with the measured one in the chemical plant.
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Keywords:
- infrared solar occultation flux /
- FTIR /
- emission gas /
- environment monitoring
[1] Wu J G 1994 Modern Fourier Transform Infrared Spectroscopy and Its Application (Vol.1) (Beijing: Scientifical and Technical Documents Press) p492—505 (in Chinese) [吴谨光 1994 近代傅里叶变换红外光谱技术及应用(上册) (北京:科学技术文献出版社) 第492—505页]
[2] Manne K, 2005, Ph.D. Dissertation (Sweden: Chalmers University of Technology)
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[4] Roland H, Peter R, Chris D, Anita J, Richard M, Benjamin T 2005 International Sociaty for Optical Engineering 5995 599510
[5] Cao T T, Luo S R, Zhao X Y, Liang H M, Wang H B, Yang J G 2007 Acta Phys. Sin. 56 5554 (in Chinese) [曹婷婷、罗时荣、赵晓艳、梁慧敏、王宏波、杨经国 2007 物理学报 56 5554]
[6] Liu Z M,Liu W Q,Gao M G,Tong J J,Zhang T S,Xu L,Wei X L 2008 Chin. Phys. B 17 4184
[7] Zhou B, Liu W Q, Qi F, Li Z B, Cui Y J 2001 Acta Phys. Sin. 50 1818 (in Chinese) [周 斌、刘文清、齐 峰、李振壁、崔延军 2001 物理学报 50 1818 ]
[8] Chaffin C T, Marshall T L, Chaffin N C 1999 Field Anal. Chem. Technol, 3 111
[9] Rothman L S, Jacquemart D, Barbe A, Chris Benner D, Birk M 2005 J Quant. Spectrosc. and Radiat. Transfer 96 139
[10] David W T Griffith. 1996 Appl. Spec. 50 59
[11] Liu Z M, Gao M G, Liu W Q, Zhang T S, Xu L, Wei X L, Chen H 2008 Spectrosc. Spect. Anal. 28 770 (in Chinese) [刘志明、高闽光、刘文清、张天舒、徐 亮、魏秀丽、陈 华 2008 光谱学与光谱分析 28 770]
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[1] Wu J G 1994 Modern Fourier Transform Infrared Spectroscopy and Its Application (Vol.1) (Beijing: Scientifical and Technical Documents Press) p492—505 (in Chinese) [吴谨光 1994 近代傅里叶变换红外光谱技术及应用(上册) (北京:科学技术文献出版社) 第492—505页]
[2] Manne K, 2005, Ph.D. Dissertation (Sweden: Chalmers University of Technology)
[3] Zhou B, Liu W Q, Zheng Z H, Zhang Y J, Song B C, Wang F P 2000 Acta Phys. Sin. 49 2507 (in Chinese) [周 斌、刘文清、郑朝辉、张玉钧、宋炳超、王锋平 2000 物理学报 49 2507]
[4] Roland H, Peter R, Chris D, Anita J, Richard M, Benjamin T 2005 International Sociaty for Optical Engineering 5995 599510
[5] Cao T T, Luo S R, Zhao X Y, Liang H M, Wang H B, Yang J G 2007 Acta Phys. Sin. 56 5554 (in Chinese) [曹婷婷、罗时荣、赵晓艳、梁慧敏、王宏波、杨经国 2007 物理学报 56 5554]
[6] Liu Z M,Liu W Q,Gao M G,Tong J J,Zhang T S,Xu L,Wei X L 2008 Chin. Phys. B 17 4184
[7] Zhou B, Liu W Q, Qi F, Li Z B, Cui Y J 2001 Acta Phys. Sin. 50 1818 (in Chinese) [周 斌、刘文清、齐 峰、李振壁、崔延军 2001 物理学报 50 1818 ]
[8] Chaffin C T, Marshall T L, Chaffin N C 1999 Field Anal. Chem. Technol, 3 111
[9] Rothman L S, Jacquemart D, Barbe A, Chris Benner D, Birk M 2005 J Quant. Spectrosc. and Radiat. Transfer 96 139
[10] David W T Griffith. 1996 Appl. Spec. 50 59
[11] Liu Z M, Gao M G, Liu W Q, Zhang T S, Xu L, Wei X L, Chen H 2008 Spectrosc. Spect. Anal. 28 770 (in Chinese) [刘志明、高闽光、刘文清、张天舒、徐 亮、魏秀丽、陈 华 2008 光谱学与光谱分析 28 770]
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