分析温室气体及CO2碳同位素比值的傅里叶变换红外光谱仪

HFCAS OpenIR

	分析温室气体及CO2碳同位素比值的傅里叶变换红外光谱仪
其他题名	Fourier transform infrared greenhouse analyzer for gases and carbon isotope ratio
	李相贤1 ; 徐亮1 ; 高闽光1 ; 童晶晶 1; 刘建国1
	2014
发表期刊	光学精密工程
ISSN	1004-924X
摘要	改进了傅里叶变换红外分析仪（FTIR）的硬件设计以实现温室气体及CO2碳同位素比值的多组分、高精度、连续自动测量.首先,对FTIR分析仪测量系统进行了设计和理论分析,引入了温度和压力监控系统以及全密封气路干燥系统.然后,讨论了光谱的定量分析过程.最后,设计了标准气体对比测量实验.实验结果表明：分析仪测量CH4,CO,CO2和δ13CO2值的标准偏差分别为0.01×10-6,0.011×10-6,0.239×10-6和0.572‰,与常规FTIR测量系统相比,其检测的标准不确定度分别提高了6.3,8.45,10.54和14.73倍,其系统误差分别提高了2.88,1.93,4.67和4.66倍;对比分析仪与同位素质谱仪对δ13CO2值的测量结果,标准偏差分别为0.572％‰和0.171‰,二者测量的标准不确定度相近.所设计的温室气体及CO2碳同位素比值FTIR分析仪能够满足多组分、高精度、连续自动测量的需要.
其他摘要	The hardware design of a Fourier Transform Infrared （FTIR） analyzer was improved to realize the simultaneous and continuous measurements of greenhouse gases and δ13 CO2 values in high Precision. Firstly, the FTIR measurement system was designed and analyzed theoretically, and the temperature and pressure monitoring systems and sealed drying gas circuit were introduced into the spectroscopy. Then the process of quantitative spectral analysis was presented. Finally, the comparative measurements were designed by using standard gases. Experimental results on CH4, CO, CO2 and ~3 CO2 indicate that the Standard Deviations（STD） measured by the designed analyzer are 0.01, 0. 011, 0. 239 X 10.6 and 0. 572‰, the standard uncertainty of designed measurement system is improved about 6. 3, 8. 45, 10. 54 and 14. 73 times that of routine FTIR measurements, and the system errors are improved about 2.88, 1.93, 4.67 and 4.66 times, respectively. The comparison of the measurement results between the analyzer and the Isotope Ratio Mass Spectrometer （IRMS） for δ13CO2 value shows that the STDs are 0. 572‰ and 0. 171‰ respectively, and the standard uncertainty of the both methods is similar. The FTIR analyzer for greenhouse gases and carbon isotope ratios satisfies the requirements of measurements for multi-species, online and high precision.
关键词	傅里叶变换红外光谱仪温室气体碳同位素比值多组分测量
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:5238921
引用统计	被引频次：12[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/93610
专题	中国科学院合肥物质科学研究院
作者单位	1.中国科学院安徽光学精密机械研究所 2.中国科学院安徽光学精密机械研究所 3.中国科学院安徽光学精密机械研究所 4.中国科学院安徽光学精密机械研究所 5.中国科学院安徽光学精密机械研究所
推荐引用方式 GB/T 7714	李相贤,徐亮,高闽光,等. 分析温室气体及CO2碳同位素比值的傅里叶变换红外光谱仪[J]. 光学精密工程,2014,022.
APA	李相贤,徐亮,高闽光,童晶晶,&刘建国.(2014).分析温室气体及CO2碳同位素比值的傅里叶变换红外光谱仪.光学精密工程,022.
MLA	李相贤,et al."分析温室气体及CO2碳同位素比值的傅里叶变换红外光谱仪".光学精密工程 022(2014).