温室气体及碳同位素比值红外光谱反演精度的影响因素研究?

物理学报

温室气体及碳同位素比值红外光谱反演精度的影响因素研究?

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李相贤, 徐亮, 高闽光, 童晶晶, 冯明春, 刘建国, 刘文清. 2015: 温室气体及碳同位素比值红外光谱反演精度的影响因素研究?, 物理学报, null(2): 24217. doi: 10.7498/aps.64.024217

引用本文:

李相贤, 徐亮, 高闽光, 童晶晶, 冯明春, 刘建国, 刘文清. 2015: 温室气体及碳同位素比值红外光谱反演精度的影响因素研究?, 物理学报, null(2): 24217. doi: 10.7498/aps.64.024217

Li Xiang-Xian, Xu Liang, Gao Min-Guang, Tong Jing-Jing, Feng Ming-Chun, Liu Jian-Guo, Liu Wen-Qing. 2015: Influence factors of quantitative analysis precision of greenhouse gases and carb on isotop e ratio based on infrared sp ectroscopy, Acta Physica Sinica, null(2): 24217. doi: 10.7498/aps.64.024217

Citation:

Li Xiang-Xian, Xu Liang, Gao Min-Guang, Tong Jing-Jing, Feng Ming-Chun, Liu Jian-Guo, Liu Wen-Qing. 2015: Influence factors of quantitative analysis precision of greenhouse gases and carb on isotop e ratio based on infrared sp ectroscopy, Acta Physica Sinica, null(2): 24217. doi: 10.7498/aps.64.024217

温室气体及碳同位素比值红外光谱反演精度的影响因素研究?

中国科学院环境光学与技术重点实验室，国家环境光学监测仪器工程技术研究中心，合肥 230031

Influence factors of quantitative analysis precision of greenhouse gases and carb on isotop e ratio based on infrared sp ectroscopy

摘要: 由于傅里叶变换红外光谱(FTIR)技术在定量反演中受到气体温度、压强等气体特性以及水汽交叉吸收的影响，使其在温室气体及碳同位素比值高精度检测领域的应用受到限制.本文首先研究了气体特性与水汽吸收敏感性修正方法；然后，结合实验研究中建立的敏感性修正函数，对标准气体实测数据进行了气体特性敏感性修正，修正后，五种测量组分的精密度均有明显提高，其标准偏差降低倍数分布在1.80到3.38之间.研究结果对于FTIR技术在大气本底温室气体及碳同位素比值高精度监测领域的应用具有重要意义.
- 气体特性敏感性 /
- 水汽吸收敏感性 /
- 温室气体 /
- 碳同位素比值
Abstract: The quantitative analysis based on Fourier transform infrared (FTIR) technology is affected by the temperature and pressure properties of gas and the H2O cross section, so the applications of FTIR technology to high-precision measurement area of the greenhouse gases and isotope ratio are restricted. Firstly, the methods of correcting the gas property sensitivities and H2O cross sensitivity are studied, then the standard gas measurements are corrected with these sensitivity correcting functions established through experimental study. The standard deviations of CO, CO2, N2O, CH4 andδ13CO2 are all improved after correcting the sensitivities, and reduced by 1.80–3.38 times. These studies are significant for the applications of FTIR technology to the high-precision measurement area of greenhouse gases and isotope ratio.

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温室气体及碳同位素比值红外光谱反演精度的影响因素研究?

中国科学院环境光学与技术重点实验室，国家环境光学监测仪器工程技术研究中心，合肥 230031

关键词:

摘要: 由于傅里叶变换红外光谱(FTIR)技术在定量反演中受到气体温度、压强等气体特性以及水汽交叉吸收的影响，使其在温室气体及碳同位素比值高精度检测领域的应用受到限制.本文首先研究了气体特性与水汽吸收敏感性修正方法；然后，结合实验研究中建立的敏感性修正函数，对标准气体实测数据进行了气体特性敏感性修正，修正后，五种测量组分的精密度均有明显提高，其标准偏差降低倍数分布在1.80到3.38之间.研究结果对于FTIR技术在大气本底温室气体及碳同位素比值高精度监测领域的应用具有重要意义.

English Abstract

Influence factors of quantitative analysis precision of greenhouse gases and carb on isotop e ratio based on infrared sp ectroscopy

中国科学院环境光学与技术重点实验室，国家环境光学监测仪器工程技术研究中心，合肥 230031

Keywords:

Abstract: The quantitative analysis based on Fourier transform infrared (FTIR) technology is affected by the temperature and pressure properties of gas and the H2O cross section, so the applications of FTIR technology to high-precision measurement area of the greenhouse gases and isotope ratio are restricted. Firstly, the methods of correcting the gas property sensitivities and H2O cross sensitivity are studied, then the standard gas measurements are corrected with these sensitivity correcting functions established through experimental study. The standard deviations of CO, CO2, N2O, CH4 andδ13CO2 are all improved after correcting the sensitivities, and reduced by 1.80–3.38 times. These studies are significant for the applications of FTIR technology to the high-precision measurement area of greenhouse gases and isotope ratio.

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