紫外差分吸收光谱技术的工业过程甲醛（CH_2O）排放检测研究
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摘要
结合烟气分析仪,基于DOAS原理和最小二乘方法对污染物CH_2O进行光谱测量和浓度反演,实验结果表明,利用2m光程的气体室,测量结果精确,最大的相对误差在0.6%以内,测量结果波动小,且检测下限低至0.09ppm,精度为0.16ppm,能实现稳定在现场的CH_2O目标污染物物质的检测。
Formaldehyde(HCHO), as a common industrial substance, is widely used in the manufacture of thermosetting urea aldehyde, phenolic aldehyde and melamino-formaldehyde resins, adhesives, organic synthesis, synthetic materials, coating materials, rubber, explosives, medicine, pesticides and other industries[1-3]. However, formaldehyde has explosive, flammable, toxic, corrosive characteristics. The industrial processes, pollutant monitoring processes and formaldehyde measurement seem very important. In combination with the flue gas analyzer independently developed by the company, and based on DOAS principle and least two involution methods, the paper carries out the spectral measurement and concentration inversion of pollutant CH_2O. The experimental results show that the paper uses the gas chamber with 2 M optical path to measure the accurate result, The maximum relative deviation is in 0.6% with the little fluctuation of the measurement results and the detection limit is as low as 0.09 ppm, and the accuracy is 0.16 ppm. Thus, the paper can realize the stability of CH_2O target pollutants detection on the spot.
Formaldehyde(HCHO), as a common industrial substance, is widely used in the manufacture of thermosetting urea aldehyde, phenolic aldehyde and melamino-formaldehyde resins, adhesives, organic synthesis, synthetic materials, coating materials, rubber, explosives, medicine, pesticides and other industries[1-3]. However, formaldehyde has explosive, flammable, toxic, corrosive characteristics. The industrial processes, pollutant monitoring processes and formaldehyde measurement seem very important. In combination with the flue gas analyzer independently developed by the company, and based on DOAS principle and least two involution methods, the paper carries out the spectral measurement and concentration inversion of pollutant CH_2O. The experimental results show that the paper uses the gas chamber with 2 M optical path to measure the accurate result, The maximum relative deviation is in 0.6% with the little fluctuation of the measurement results and the detection limit is as low as 0.09 ppm, and the accuracy is 0.16 ppm. Thus, the paper can realize the stability of CH_2O target pollutants detection on the spot.
引文
[1]Brackmann Christian,Li Zhongshan,Rupinski Mart in,Docquier Nicolas，Pengloan Gaelle Aldén Marcus.Strategies for formaldehyde detection in f lames and engines using a single-mode Nd:YAG/OPO laser system.[J].Applied Spectroscopy,2005,596.
[2]汪帆，李正文，艾照全.纤维板用胶黏剂及其甲醛释放量的研究新进展[J].黏接，2011,(10）.
[3]魏旭，高军林，台明青，等.板式家俱甲醛释放与环境温度定量关系研究[J].安徽农业科学，2009,(8）.
[4]桂彩云，杨宏亮.室内甲醛含量自动检测系统的设计与实现[J].国外电子测量技术，2014,(7):40-44.
[5]张苏敏，刘亚民.关于甲醛测量方法标准的评述.中国测试技术，2006,32(5):129-132．
[6]国家质量监督检验检疫总局，建设部.（GB 50325-2001）民用建筑工程室内环境污染控制规范[S].2001.
[7]国家技术监督局.（GB/T 18204.26-2000）公共场所空气中甲醛测定方法一酚试剂分光光度法[S].2000.
[8]谢品华，等.差分光学吸收光谱（DOAS）技术在烟气SO2监测中的应用[J].光子学报，2000,29(3):271-275.
[9]李玉金，谢品华，等.差分吸收光谱中甲醛的反演研究.光谱学与光谱分析，2009,1(3):196-200.
[10]周斌，刘文清，齐峰，等.差分吸收光谱法测量大气污染的浓度反演方法的研究[J].物理学报，2001,50(9):1819,1822.
[11]许利华，等.应用差分光谱吸收法监测SO2的固定污染源连续排放监测系统[J].动力工程，2008,28(4):616-619.
[12]JOHAN M,ARNE R.DOAS for fu le gas monitoring-i temperature effects in the U.V./visible absorption spectra of NO,NO2,SO2and NH3.Journal of Quantitative Spectroscopy and Radiative Transfer,1996,56(2):187-208.
[13]JOHAN M,ARNE R.DOAS for flue gas monitoring-ii.Deviations from the Beer-Lambert law for the U.V./visible absorption spectra of NO,NO2,SO2and NH3.Journal of Quantitative Spectroscopy and Radiative Transfer,1996,56(2）:209-224.
[14]Edner H,Sunesson A,Svanberg S,et al.A differential optical absorption spectroscopy(DOAS)system used for Atmospheric mercury monitoring[J].Applied Optics,1986,(25):403-410.
[15]Platt U,Perner D,Patz H.Simultaneous measurement of atmospheric CH2O,O3 and NO2 by differential optical.absorption[J].Journal of Geophysical Research,1979,84(10):6329-6335.
[16]汤光华，许传龙，孔明，等.基于差分光谱法的燃煤锅炉烟气浓度反演算法[J].中国电机工程学报，2007,27(11):6-10.
[17]Edner H,Sunesson A,Svanberg S,et al.A differential optical absorption spectroscopy(DOAS)system used for Atmospheric mercury monitoring[J].Applied Optics，1986,(25):403-410.
[18]Stutz J,Platt U.Numerical analysis and estimation of statistical error of differential spectroscopy measurement with least-squares methods[J].Applied Optics,1996,35(30):6041-6053.
[19]郑海明.SO2、NO2近紫外可见光吸收特性的实验研究及差分吸收光谱法的应用[D].上海：上海理工大学，2006.
[20]Jochen Stutz,Ulrich Plat,Numerical analysis and estimation of the statical error of differential optical absorption spectroscopy measurements with least-squares methods APPLIED OPTICS,1996,35(30):6041.
[2]汪帆，李正文，艾照全.纤维板用胶黏剂及其甲醛释放量的研究新进展[J].黏接，2011,(10）.
[3]魏旭，高军林，台明青，等.板式家俱甲醛释放与环境温度定量关系研究[J].安徽农业科学，2009,(8）.
[4]桂彩云，杨宏亮.室内甲醛含量自动检测系统的设计与实现[J].国外电子测量技术，2014,(7):40-44.
[5]张苏敏，刘亚民.关于甲醛测量方法标准的评述.中国测试技术，2006,32(5):129-132．
[6]国家质量监督检验检疫总局，建设部.（GB 50325-2001）民用建筑工程室内环境污染控制规范[S].2001.
[7]国家技术监督局.（GB/T 18204.26-2000）公共场所空气中甲醛测定方法一酚试剂分光光度法[S].2000.
[8]谢品华，等.差分光学吸收光谱（DOAS）技术在烟气SO2监测中的应用[J].光子学报，2000,29(3):271-275.
[9]李玉金，谢品华，等.差分吸收光谱中甲醛的反演研究.光谱学与光谱分析，2009,1(3):196-200.
[10]周斌，刘文清，齐峰，等.差分吸收光谱法测量大气污染的浓度反演方法的研究[J].物理学报，2001,50(9):1819,1822.
[11]许利华，等.应用差分光谱吸收法监测SO2的固定污染源连续排放监测系统[J].动力工程，2008,28(4):616-619.
[12]JOHAN M,ARNE R.DOAS for fu le gas monitoring-i temperature effects in the U.V./visible absorption spectra of NO,NO2,SO2and NH3.Journal of Quantitative Spectroscopy and Radiative Transfer,1996,56(2):187-208.
[13]JOHAN M,ARNE R.DOAS for flue gas monitoring-ii.Deviations from the Beer-Lambert law for the U.V./visible absorption spectra of NO,NO2,SO2and NH3.Journal of Quantitative Spectroscopy and Radiative Transfer,1996,56(2）:209-224.
[14]Edner H,Sunesson A,Svanberg S,et al.A differential optical absorption spectroscopy(DOAS)system used for Atmospheric mercury monitoring[J].Applied Optics,1986,(25):403-410.
[15]Platt U,Perner D,Patz H.Simultaneous measurement of atmospheric CH2O,O3 and NO2 by differential optical.absorption[J].Journal of Geophysical Research,1979,84(10):6329-6335.
[16]汤光华，许传龙，孔明，等.基于差分光谱法的燃煤锅炉烟气浓度反演算法[J].中国电机工程学报，2007,27(11):6-10.
[17]Edner H,Sunesson A,Svanberg S,et al.A differential optical absorption spectroscopy(DOAS)system used for Atmospheric mercury monitoring[J].Applied Optics，1986,(25):403-410.
[18]Stutz J,Platt U.Numerical analysis and estimation of statistical error of differential spectroscopy measurement with least-squares methods[J].Applied Optics,1996,35(30):6041-6053.
[19]郑海明.SO2、NO2近紫外可见光吸收特性的实验研究及差分吸收光谱法的应用[D].上海：上海理工大学，2006.
[20]Jochen Stutz,Ulrich Plat,Numerical analysis and estimation of the statical error of differential optical absorption spectroscopy measurements with least-squares methods APPLIED OPTICS,1996,35(30):6041.
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