Quantification of iodine monoxide based on incoherent broadband cavity enhanced absorption spectroscopy

doi:10.7498/aps.70.20210312

HFCAS OpenIR

	Quantification of iodine monoxide based on incoherent broadband cavity enhanced absorption spectroscopy
	Zhang He-Lu 1,2; Qin Min1,2 ; Fang Wu1 ; Tang Ke 1,2; Duan Jun1 ; Meng Fan-Hao 1,2; Shao Dou 1,2; Hua Hui 1,2; Liao Zhi-Tang 1,2; Xie Pin-Hua1,2
	2021-08-05
发表期刊	ACTA PHYSICA SINICA
ISSN	1000-3290
通讯作者	Qin Min(mqin@aiofm.ac.cn)
摘要	The quantitative method of iodine monoxide radical (TO) using incoherent broadband cavity enhanced absorption spectroscopy (IBBCEAS) in the 435-465 nm band is described in this paper. In order to obtain the concentration of IO accurately, the parameters such as the mirror reflectivity, effective cavity length and sample loss of the IBBCEAS system are evaluated. Using the difference of Rayleigh scattering between nitrogen and helium, the reflectivity curve of the high-reflection mirror is obtained. The reflectivity R of the mirror at 436.1 nm of the IO absorption peak is about 0.99982, and the effective absorption optical path reaches 3.83 km under vacuum condition. According to the absorption of O-4, the effective cavity length of the modified system is 60.7 cm. The Allan deviation is used to evaluate the performance of the system, and the standard deviation is used to analyze the detection sensitivity of the system. When the time resolution is 60 s, the detection sensitivity (2 sigma) of the system for IO and NO2 are 1.9 pptv and 20 pptv (part per trillion by volume), respectively. The iodine dissolved in potassium iodide (KI) solution is taken out by the bubbling method and react with ozone after photolysis to produce a stable concentration of IO sample gas. The IO loss in the sampling tube is calibrated, and the results show that the sampling tube has no significant effect on the IO loss. The IBBCEAS system is used to determine the linearity of TO, and the correlation coefficient R-2 between the measured concentration of IO and the proportioned concentration in a concentration range from 39 to 530 pptv is 0.99. The IO produced by the reaction of iodine released from kelp with ozone is measured.
关键词	iodine monoxide radical incoherent broadband cavity enhanced absorption spectroscopy quantitative determination
DOI	10.7498/aps.70.20210312
关键词[WOS]	LASER-INDUCED FLUORESCENCE ; IN-SITU ; DOAS INSTRUMENT ; CROSS-SECTIONS ; IO ; SPECTROMETER ; GLYOXAL ; OXIDE ; NO2 ; NM
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41875154] ; National Natural Science Foundation of China[U19A2044] ; Anhui Provincial Key R&D Program, China[202104i07020010]
项目资助者	National Natural Science Foundation of China ; Anhui Provincial Key R&D Program, China
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000684055300003
出版者	CHINESE PHYSICAL SOC
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/124319
专题	中国科学院合肥物质科学研究院
通讯作者	Qin Min
作者单位	1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei Inst Mat Sci, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China
第一作者单位	中科院安徽光学精密机械研究所
通讯作者单位	中科院安徽光学精密机械研究所
推荐引用方式 GB/T 7714	Zhang He-Lu,Qin Min,Fang Wu,et al. Quantification of iodine monoxide based on incoherent broadband cavity enhanced absorption spectroscopy[J]. ACTA PHYSICA SINICA,2021,70.
APA	Zhang He-Lu.,Qin Min.,Fang Wu.,Tang Ke.,Duan Jun.,...&Xie Pin-Hua.(2021).Quantification of iodine monoxide based on incoherent broadband cavity enhanced absorption spectroscopy.ACTA PHYSICA SINICA,70.
MLA	Zhang He-Lu,et al."Quantification of iodine monoxide based on incoherent broadband cavity enhanced absorption spectroscopy".ACTA PHYSICA SINICA 70(2021).