Study on the concentration retrieval of SO2 and NO2 in mixed gases based on the improved DOAS method

doi:10.1039/d3ra01512b

CIOMP OpenIR

	Study on the concentration retrieval of SO2 and NO2 in mixed gases based on the improved DOAS method
	Y. B. Yang, J. N. Wang, Z. H. Zhang and G. Y. Lin
	2023
发表期刊	Rsc Advances
卷号	13 期号:28 页码:19149-19157
摘要	NO2 and SO2 are important components of air pollutants, and their absorption spectra are superimposed at 193-253 nm. The superposed spectra affect the gas concentration retrieval based on the ultraviolet differential optical absorption spectroscopy (DOAS) method. In this study, a suitable wavelength band was chosen for concentration retrieval, moreover, the characteristics of the quasi-periodic variation of absorption cross-section with wavelength was given sufficient attention and then the superposed spectra were separated by the Fast Fourier transform (FFT) method. The concentration of the gases to be measured was calculated according to the relationship between the amplitude of absorbance after FFT and the gas concentration. The experimental results prove that by using an absorption cell with a 700 mm optical path, the relative deviation absolute value of the retrieval concentration of SO2 in a NO2 and SO2 gas mixture is less than 1.471%, and that of NO2 in a NO2 and SO2 gas mixture is less than 7.207%. The method has good adaptability, high detection precision, whether single SO2, NO2 or a mixture of both, and important reference value for the development of DOAS and future research on the high-precision detection of more types of mixed gases in the ultraviolet band, such as gas mixtures of NO2, SO2 and NO in flue gas.
DOI	10.1039/d3ra01512b
URL	查看原文
收录类别	sci ; ei
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/68094
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. B. Yang, J. N. Wang, Z. H. Zhang and G. Y. Lin. Study on the concentration retrieval of SO2 and NO2 in mixed gases based on the improved DOAS method[J]. Rsc Advances,2023,13(28):19149-19157.
APA	Y. B. Yang, J. N. Wang, Z. H. Zhang and G. Y. Lin.(2023).Study on the concentration retrieval of SO2 and NO2 in mixed gases based on the improved DOAS method.Rsc Advances,13(28),19149-19157.
MLA	Y. B. Yang, J. N. Wang, Z. H. Zhang and G. Y. Lin."Study on the concentration retrieval of SO2 and NO2 in mixed gases based on the improved DOAS method".Rsc Advances 13.28(2023):19149-19157.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Study on the concent（1575KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载